{"id":163802,"date":"2026-03-18T00:00:00","date_gmt":"2026-03-18T00:00:00","guid":{"rendered":"https:\/\/watchman.news\/2026\/03\/the-surprising-role-of-cortisol-in-alzheimers\/"},"modified":"2026-03-22T20:18:27","modified_gmt":"2026-03-22T20:18:27","slug":"the-surprising-role-of-cortisol-in-alzheimers","status":"publish","type":"post","link":"https:\/\/watchman.news\/uk\/2026\/03\/the-surprising-role-of-cortisol-in-alzheimers\/","title":{"rendered":"The Surprising Role of Cortisol in Alzheimer’s"},"content":{"rendered":"
\n
\n
\n
\n<\/p>\n

A New Series of Health Insights Is on the\u00a0Way<\/p>\n<\/div>\n

\n
\u0412\u0410\u0416\u041b\u0418\u0412\u041e<\/div>\n
\n

A New Series of Health Insights Is on the\u00a0Way<\/p>\n

\n Our team has been working behind the scenes to prepare new research and practical health
\n strategies for our readers. While we finish preparing what\u2019s coming next, we invite you to
\n explore one of the most-read articles from our library below. See exactly what’s changing \u2192<\/a>\n<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n

Alzheimer\u2019s disease doesn\u2019t begin with memory loss \u2014 it begins years earlier with a slow, silent shift in your body\u2019s stress chemistry. Long before neurons die, your brain\u2019s hormonal balance starts to erode under constant pressure from everyday stress. The same hormones that once kept you alert and focused start working against you, wearing down your brain\u2019s repair systems and disrupting the flow of energy your cells depend on.<\/p>\n

Cortisol, the body\u2019s main stress hormone, plays a central role in this process. When it stays high for too long, it drains your metabolic reserves and interferes with memory formation. Meanwhile, a second hormone called DHEA-S acts as cortisol\u2019s natural counterbalance, helping protect neurons and stabilize brain function.<\/p>\n

When the ratio between these two hormones tilts toward cortisol, your brain loses its resilience and becomes more vulnerable to aging and degeneration. This hormonal tug-of-war \u2014 shaped by stress, diet, and metabolism \u2014 has drawn new attention from researchers exploring why some people develop Alzheimer\u2019s while others do not. The latest findings suggest that long-term hormonal imbalance, not just genetics or plaque buildup, could be one of the earliest warning signs of decline.<\/p>\n

Understanding this relationship changes how you think about prevention. By strengthening your metabolism, restoring hormonal balance, and reducing chronic stress, you can support your brain\u2019s ability to heal and adapt \u2014 long before symptoms appear. The new research provides a roadmap for how to start.<\/p>\n

\n
\n<\/figure>\n<\/div>\n

Stress Hormones Tip the Balance Toward Alzheimer\u2019s<\/h2>\n

A clinical study published in Cureus examined 85 adults in Serbia \u2014 45 with diagnosed Alzheimer\u2019s disease and 40 healthy peers of similar age and sex \u2014 to determine how two hormones, cortisol and DHEA-S, relate to brain health.1<\/span><\/sup> Cortisol is your body\u2019s main stress hormone, while DHEA-S (dehydroepiandrosterone sulfate) acts as its built-in counterbalance \u2014 a neurosteroid that supports brain resilience and energy metabolism.<\/p>\n

Unlike DHEA<\/a>, which is the fast-acting, active form, DHEA-S is its sulfated storage form that circulates in your blood far longer and provides a more stable picture of long-term stress balance. By focusing on DHEA-S, the researchers could better gauge chronic stress effects on the brain rather than short-term fluctuations. The scientists wanted to know whether Alzheimer\u2019s patients showed measurable differences in these hormones or in their ratio, which indicates how well your body manages prolonged stress.<\/p>\n

\n

\u2022 <\/span>People with Alzheimer\u2019s had higher cortisol levels but not lower DHEA-S \u2014<\/strong> Those with Alzheimer\u2019s showed cortisol levels averaging nearly 399 nanomoles per liter (nmol\/L) \u2014 about 20% higher than healthy adults \u2014 yet their DHEA-S concentrations stayed roughly the same.<\/p>\n

This imbalance means the stress response remains chronically activated without the brain\u2019s natural protection. When cortisol dominates, neurons experience more inflammation and less regeneration. The study also noted that this skewed balance was strongest among participants aged 65 to 75, suggesting that middle-to-late adulthood is when stress hormones begin exerting their most damaging effects.<\/p>\n

\u2022 <\/span>The cortisol-to-DHEA-S ratio proved to be the real warning sign \u2014<\/strong> Although each hormone alone tells part of the story, the researchers emphasized that their ratio \u2014 how much cortisol outweighs DHEA-S \u2014 offers a clearer window into chronic stress and brain decline.<\/p>\n

In Alzheimer\u2019s patients, that ratio climbed steeply, implying that the body\u2019s defense system against cortisol\u2019s toxicity was failing. This finding helps explain why some people with normal cortisol readings still experience cognitive decline: it\u2019s the imbalance, not just the level, that matters.<\/p>\n

\u2022 <\/span>Men and women responded differently, revealing hormonal sensitivity \u2014<\/strong> In healthy adults, men had significantly higher DHEA-S levels than women, meaning their brains could have greater protection from chronic stress. But that sex difference disappeared in those with Alzheimer\u2019s.<\/p>\n

The disease seemed to override normal hormonal patterns, flattening DHEA-S levels in both sexes. This means that once neurodegeneration begins, your brain\u2019s ability to maintain hormonal balance \u2014 one of its self-defense tools \u2014 breaks down.<\/p>\n

\u2022 <\/span>Age changed the picture again, suggesting a nonlinear hormonal response \u2014<\/strong> When researchers divided participants by age, they noticed that younger Alzheimer\u2019s patients (60 to 65) had higher DHEA-S levels, which dropped sharply in the 66 to 75 group before rising again after age 75.<\/p>\n

This unexpected curve points to a possible window of hormonal collapse, where midlife stress overwhelms the body\u2019s compensatory systems. If you\u2019re in this age range and facing chronic stress, that\u2019s when intervention \u2014 stress reduction, adequate rest, and metabolic support \u2014 could be most protective for your brain.<\/p>\n<\/div>\n

Cortisol Acts Like an Overzealous Cleanup Crew That Damages What It\u2019s Meant to Protect<\/h2>\n

Elevated cortisol increases inflammation and oxidative stress \u2014 chemical reactions that corrode neurons and disrupt communication between brain cells. It also suppresses the growth of new neurons in your hippocampus, the brain\u2019s memory center, making it harder to store new information.<\/p>\n

In contrast, DHEA-S supports neuronal survival, enhances energy metabolism, and shields brain tissue from the harmful effects of excessive cortisol. When cortisol wins this hormonal tug-of-war, brain networks lose their flexibility and begin to deteriorate.<\/p>\n

\n

\u2022 <\/span>Why stress and memory loss are so tightly linked \u2014<\/strong> Chronic cortisol elevation interferes with glucose uptake in brain cells, depriving them of the fuel needed to form memories. It also increases amyloid-beta and tau accumulation \u2014 the same proteins that define Alzheimer\u2019s pathology.<\/p>\n

Meanwhile, DHEA-S helps counter these effects by enhancing insulin sensitivity and calming overactive immune responses in your brain. In simple terms, one hormone burns your mental circuits, the other repairs them.<\/p>\n

\u2022 <\/span>A new biological marker for early intervention \u2014<\/strong> Instead of waiting for memory loss or imaging changes, tracking your cortisol-to-DHEA-S ratio could signal early stress damage years before cognitive symptoms arise.<\/p>\n

If your cortisol stays high while DHEA-S falls or stagnates, that\u2019s a red flag. Supporting your metabolic health, prioritizing quality sleep, and restoring hormonal balance could help keep your brain\u2019s internal environment stable long before Alzheimer\u2019s develops.<\/p>\n<\/div>\n

Lowering Cortisol and Raising Metabolic Energy Could Reverse Brain Decline<\/h2>\n

In a commentary, bioenergetic researcher Georgi Dinkov analyzed the Cureus study showing that people with Alzheimer\u2019s disease had significantly higher cortisol levels and a skewed cortisol-to-DHEA-S ratio compared to healthy adults.2<\/span><\/sup> He explained that these results validate decades of bioenergetic research linking chronic stress, low metabolism, and neurodegeneration.<\/p>\n

Dinkov emphasized that it\u2019s not just elevated cortisol<\/a> that drives decline \u2014 it\u2019s the imbalance between cortisol and protective steroids such as DHEA, testosterone, and progesterone. When this ratio tips toward cortisol dominance, your body remains in a chronic \u201cfight-or-flight\u201d state that accelerates tissue breakdown and cognitive loss.<\/p>\n

\n

\u2022 <\/span>Dinkov connected the findings to thyroid-driven metabolic stress \u2014<\/strong> Building on the Cureus data, Dinkov explained that hypothyroidism \u2014 a sluggish thyroid<\/a> that slows metabolic energy production \u2014 creates the same hormonal pattern seen in Alzheimer\u2019s patients: high cortisol and suppressed DHEA-S.<\/p>\n

When your metabolism slows, your body compensates by ramping up stress hormones to stay alert and energized. But this backfires over time, leading to chronic brain inflammation, poor glucose uptake, and reduced adenosine triphosphate (ATP) production \u2014 the energy currency your brain depends on.<\/p>\n

\u2022 <\/span>Your cortisol-to-DHEA-S ratio predicts long-term health better than any single hormone \u2014<\/strong> According to Dinkov, this ratio \u2014 spotlighted by the Cureus research \u2014 is among the strongest predictors of all-cause mortality and neurodegenerative risk. Even when cortisol fluctuates throughout the day, the ratio reveals whether your stress and repair systems are balanced.<\/p>\n

Dinkov suggested measuring cortisol and DHEA-S in hair or nails rather than blood, since these tissues reflect long-term hormonal patterns. For anyone trying to gauge chronic stress or cognitive risk, this offers a simple, objective biomarker that\u2019s far more reliable than a one-time blood test.<\/p>\n

\u2022 <\/span>Natural compounds help restore hormonal balance and metabolic strength \u2014<\/strong> Dinkov referenced several well-known substances \u2014 aspirin, niacinamide (vitamin B3), progesterone, pregnenolone, thyroid support, glycine, and emodin \u2014 that help correct the same imbalance observed in the Cureus study. These compounds work by lowering excess cortisol, improving mitochondrial energy output, and supporting the production of protective hormones.<\/p>\n

Niacinamide<\/a>, for instance, increases NAD+, which fuels cellular repair, while aspirin<\/a> dampens inflammation and cortisol overproduction. Used together, these tools shift your body back into a \u201crest-and-repair\u201d mode rather than the constant stress chemistry that drives brain aging.<\/p>\n

\u2022 <\/span>DHEA acts as a built-in cortisol regulator \u2014<\/strong> Dinkov explained one of the key ways DHEA helps keep cortisol in check: it blocks the enzyme that turns inactive cortisol back \u201con\u201d and boosts the one that clears excess cortisol from your body. This dual action makes DHEA a natural cortisol buffer that prevents the overactivation of stress pathways.<\/p>\n

In other words, DHEA gives your brain a biochemical \u201ccooling system,\u201d stopping cortisol from overheating your neurons. Supporting DHEA through thyroid health, nutrition, and targeted supplementation helps restore this essential balance.<\/p>\n

\u2022 <\/span>Stress is a symptom of low energy, not just emotional strain \u2014<\/strong> Dinkov described how the elevated cortisol levels observed in the Cureus Alzheimer\u2019s cohort represent a deeper issue: energy failure. When your cells don\u2019t make enough ATP \u2014 whether from poor thyroid output, nutrient deficiencies, or aging \u2014 they turn to cortisol to compensate.<\/p>\n

The hormone breaks down tissue to release fuel, but that process worsens energy depletion over time. This self-reinforcing loop explains why chronic stress feels endless: it\u2019s a metabolic, not psychological, trap. Dinkov concluded that maintaining a low cortisol-to-DHEA-S ratio protects more than memory \u2014 it sustains whole-body resilience.<\/p>\n

People who keep this ratio balanced experience better sleep, stable mood, and slower biological aging. His message is practical: by restoring thyroid function, eating enough to prevent energy deficits, and lowering chronic inflammation, you directly influence the biochemical environment that determines whether your brain decays or endures.<\/p>\n<\/div>\n

Rebuild Your Energy System to Lower Cortisol and Protect Your Brain<\/h2>\n

If you wake up tired, crash midafternoon, or feel wired when you should be asleep, your body\u2019s stress chemistry has taken over. The Cureus study3<\/span><\/sup> and Dinkov\u2019s review4<\/span><\/sup> both point to the same conclusion: your brain suffers when your cells can\u2019t make enough energy.<\/p>\n

To fix that, you have to restore steady fuel, retrain your stress response, and help your body recognize that it\u2019s no longer in survival mode. Here\u2019s how to bring your hormones \u2014 and your energy \u2014 back into balance:<\/p>\n

\n

1. <\/span>Feed your metabolism the fuel it\u2019s been missing \u2014<\/strong> Cutting carbs keeps your body trapped in a constant stress loop because cortisol spikes whenever blood sugar drops too low. Break that pattern by eating enough healthy carbohydrates \u2014 around 250 grams daily \u2014 to give your mitochondria a steady energy supply.<\/p>\n

Start with gentle foods like fruit and white rice. When your digestion feels stable (no bloating or irregularity), add cooked root vegetables, then more vegetables, legumes, and well-tolerated whole grains. Once your body trusts it\u2019s being fed regularly, cortisol naturally declines, and your energy and focus stabilize.<\/p>\n

2. <\/span>Move in ways that restore instead of deplete \u2014<\/strong> Overdoing endurance exercise<\/a> or high-intensity intervals keeps your body in fight-or-flight mode long after the workout ends. Cortisol stays elevated, recovery slows, and sleep suffers.<\/p>\n

Replace long, punishing sessions with physical activities that build energy rather than drain it \u2014 strength training, walking outdoors, dancing, or swimming at an easy pace. Use how you feel afterward as your guide: if you finish feeling grounded and calm, you\u2019ve helped your hormones, not hurt them.<\/p>\n

3. <\/span>Train your nervous system to shift out of stress \u2014<\/strong> Your breath is the fastest lever you have to quiet cortisol and activate your parasympathetic, or \u201crest and digest,\u201d system. Try rhythmic breathing patterns<\/a> like 4-7-8 or 4-8 breathing \u2014 inhaling for four seconds, holding briefly, and exhaling slowly for seven to eight seconds.<\/p>\n

The extended exhale stimulates your vagus nerve, lowering heart rate and cortisol while signaling safety to every organ. Practice before bed, after meals, or whenever tension rises. Over time, your body learns that it no longer needs to live in emergency mode.<\/p>\n

4. <\/span>Rebuild your circadian rhythm through light and sleep \u2014<\/strong> Cortisol follows your light exposure, not your alarm clock. Get outside within an hour of waking to anchor your body\u2019s circadian rhythm<\/a>, and dim screens and overhead lighting at night so melatonin can rise naturally.<\/p>\n

Keep your bedtime and wake-up times consistent \u2014 even on weekends \u2014 to lock in hormonal balance. Deep, regular sleep clears stress hormones, strengthens memory, and repairs brain tissue. If you\u2019re dragging through the day, fix your light and sleep first instead of relying on caffeine.<\/p>\n

5. <\/span>Use natural progesterone to quiet the cortisol surge \u2014<\/strong> Bioidentical progesterone acts as your body\u2019s built-in cortisol brake, restoring calm where chronic stress has hijacked balance. Unlike synthetic versions, natural progesterone fits perfectly into your body\u2019s own receptor system, lowering cortisol\u2019s overstimulation and supporting deep rest.<\/p>\n<\/div>\n

FAQs About Cortisol and Alzheimer\u2019s Disease<\/h2>\n
\n
\n

Q: What did the new Alzheimer\u2019s study reveal about cortisol and DHEA-S?<\/span><\/strong><\/p>\n

A: <\/strong>Researchers found that people with Alzheimer\u2019s disease had cortisol levels roughly 20% higher than healthy adults, while their DHEA-S levels stayed about the same. This created a skewed cortisol-to-DHEA-S ratio \u2014 meaning stress hormones were overpowering the brain\u2019s natural defenses. That imbalance, not just genetics or amyloid buildup, appears to drive the early stages of brain decline.<\/p>\n<\/div>\n

\n

Q: How are DHEA and DHEA-S different?<\/span><\/strong><\/p>\n

A: <\/strong>DHEA is the fast-acting form of the hormone, while DHEA-S is the stable, long-lasting form stored in your blood. Because DHEA-S changes slowly, it\u2019s a better measure of long-term stress and brain resilience. It also acts as a neurosteroid, helping neurons resist inflammation and oxidative damage while buffering cortisol\u2019s harmful effects.<\/p>\n<\/div>\n

\n

Q: What did Georgi Dinkov\u2019s analysis add to this research?<\/span><\/strong><\/p>\n

A: <\/strong>Dinkov explained that the Cureus study confirms a broader principle: high cortisol and low metabolic energy often go hand in hand. He connected these hormone shifts to thyroid sluggishness, nutrient depletion, and aging \u2014 all of which drain cellular energy and raise stress chemistry. He also noted that maintaining a low cortisol-to-DHEA-S ratio predicts not just better memory but longer life and greater overall resilience.<\/p>\n<\/div>\n

\n

Q: What practical steps help lower cortisol and restore hormonal balance?<\/span><\/strong><\/p>\n

A: <\/strong>To calm your stress system, start by fueling your metabolism. Eat enough healthy carbohydrates \u2014 about 250 grams per day \u2014 to keep blood sugar stable. Cut back on overtraining, use rhythmic breathing to activate your vagus nerve, and rebuild your circadian rhythm by getting morning sunlight and sleeping on a consistent schedule. These changes lower cortisol naturally while improving energy and mental clarity.<\/p>\n<\/div>\n

\n

Q: How does progesterone fit into this picture?<\/span><\/strong><\/p>\n

A: <\/strong>Natural progesterone acts as a built-in cortisol blocker. Your body recognizes it as a calming, balancing hormone that reduces overstimulation, helps you sleep deeply, and stabilizes mood. Natural progesterone effectively blocks cortisol by reducing blood concentrations, helping restore hormonal harmony, protecting your brain and body from the long-term effects of stress.<\/p>\n<\/div>\n<\/div>\n

<\/p>","protected":false},"excerpt":{"rendered":"

A New Series of Health Insights Is on the\u00a0Way<\/p>\n

\u0412\u0410\u0416\u041b\u0418\u0412\u041e<\/p>\n

A New Series of Health Insights Is on the\u00a0Way<\/p>\n

Our team has been working behind the scenes to prepare new research and practical health
\n strategies for our readers. While we finish preparing what\u2019s coming next, we invite you to
\n explore one of the most-read articles from our library below. See exactly what’s changing \u2192<\/p>\n

Alzheimer\u2019s disease doesn\u2019t begin with memory loss \u2014 it begins years earlier with a slow, silent shift in your body\u2019s stress chemistry. Long before neurons die, your brain\u2019s hormonal balance starts to erode under constant pressure from everyday stress. The same hormones that once kept you alert and focused start working against you, wearing down your brain\u2019s repair systems and disrupting the flow of energy your cells depend on.<\/p>\n

Cortisol, the body\u2019s main stress hormone, plays a central role in this process. When it stays high for too long, it drains your metabolic reserves and interferes with memory formation. Meanwhile, a second hormone called DHEA-S acts as cortisol\u2019s natural counterbalance, helping protect neurons and stabilize brain function.<\/p>\n

When the ratio between these two hormones tilts toward cortisol, your brain loses its resilience and becomes more vulnerable to aging and degeneration. This hormonal tug-of-war \u2014 shaped by stress, diet, and metabolism \u2014 has drawn new attention from researchers exploring why some people develop Alzheimer\u2019s while others do not. The latest findings suggest that long-term hormonal imbalance, not just genetics or plaque buildup, could be one of the earliest warning signs of decline.<\/p>\n

Understanding this relationship changes how you think about prevention. By strengthening your metabolism, restoring hormonal balance, and reducing chronic stress, you can support your brain\u2019s ability to heal and adapt \u2014 long before symptoms appear. The new research provides a roadmap for how to start.<\/p>\n

Stress Hormones Tip the Balance Toward Alzheimer\u2019s<\/p>\n

A clinical study published in Cureus examined 85 adults in Serbia \u2014 45 with diagnosed Alzheimer\u2019s disease and 40 healthy peers of similar age and sex \u2014 to determine how two hormones, cortisol and DHEA-S, relate to brain health.1 Cortisol is your body\u2019s main stress hormone, while DHEA-S (dehydroepiandrosterone sulfate) acts as its built-in counterbalance \u2014 a neurosteroid that supports brain resilience and energy metabolism.<\/p>\n

Unlike DHEA, which is the fast-acting, active form, DHEA-S is its sulfated storage form that circulates in your blood far longer and provides a more stable picture of long-term stress balance. By focusing on DHEA-S, the researchers could better gauge chronic stress effects on the brain rather than short-term fluctuations. The scientists wanted to know whether Alzheimer\u2019s patients showed measurable differences in these hormones or in their ratio, which indicates how well your body manages prolonged stress.<\/p>\n

\u2022 People with Alzheimer\u2019s had higher cortisol levels but not lower DHEA-S \u2014 Those with Alzheimer\u2019s showed cortisol levels averaging nearly 399 nanomoles per liter (nmol\/L) \u2014 about 20% higher than healthy adults \u2014 yet their DHEA-S concentrations stayed roughly the same.<\/p>\n

This imbalance means the stress response remains chronically activated without the brain\u2019s natural protection. When cortisol dominates, neurons experience more inflammation and less regeneration. The study also noted that this skewed balance was strongest among participants aged 65 to 75, suggesting that middle-to-late adulthood is when stress hormones begin exerting their most damaging effects.<\/p>\n

\u2022 The cortisol-to-DHEA-S ratio proved to be the real warning sign \u2014 Although each hormone alone tells part of the story, the researchers emphasized that their ratio \u2014 how much cortisol outweighs DHEA-S \u2014 offers a clearer window into chronic stress and brain decline.<\/p>\n

In Alzheimer\u2019s patients, that ratio climbed steeply, implying that the body\u2019s defense system against cortisol\u2019s toxicity was failing. This finding helps explain why some people with normal cortisol readings still experience cognitive decline: it\u2019s the imbalance, not just the level, that matters.<\/p>\n

\u2022 Men and women responded differently, revealing hormonal sensitivity \u2014 In healthy adults, men had significantly higher DHEA-S levels than women, meaning their brains could have greater protection from chronic stress. But that sex difference disappeared in those with Alzheimer\u2019s.<\/p>\n

The disease seemed to override normal hormonal patterns, flattening DHEA-S levels in both sexes. This means that once neurodegeneration begins, your brain\u2019s ability to maintain hormonal balance \u2014 one of its self-defense tools \u2014 breaks down.<\/p>\n

\u2022 Age changed the picture again, suggesting a nonlinear hormonal response \u2014 When researchers divided participants by age, they noticed that younger Alzheimer\u2019s patients (60 to 65) had higher DHEA-S levels, which dropped sharply in the 66 to 75 group before rising again after age 75.<\/p>\n

This unexpected curve points to a possible window of hormonal collapse, where midlife stress overwhelms the body\u2019s compensatory systems. If you\u2019re in this age range and facing chronic stress, that\u2019s when intervention \u2014 stress reduction, adequate rest, and metabolic support \u2014 could be most protective for your brain.<\/p>\n

Cortisol Acts Like an Overzealous Cleanup Crew That Damages What It\u2019s Meant to Protect<\/p>\n

Elevated cortisol increases inflammation and oxidative stress \u2014 chemical reactions that corrode neurons and disrupt communication between brain cells. It also suppresses the growth of new neurons in your hippocampus, the brain\u2019s memory center, making it harder to store new information.<\/p>\n

In contrast, DHEA-S supports neuronal survival, enhances energy metabolism, and shields brain tissue from the harmful effects of excessive cortisol. When cortisol wins this hormonal tug-of-war, brain networks lose their flexibility and begin to deteriorate.<\/p>\n

\u2022 Why stress and memory loss are so tightly linked \u2014 Chronic cortisol elevation interferes with glucose uptake in brain cells, depriving them of the fuel needed to form memories. It also increases amyloid-beta and tau accumulation \u2014 the same proteins that define Alzheimer\u2019s pathology.<\/p>\n

Meanwhile, DHEA-S helps counter these effects by enhancing insulin sensitivity and calming overactive immune responses in your brain. In simple terms, one hormone burns your mental circuits, the other repairs them.<\/p>\n

\u2022 A new biological marker for early intervention \u2014 Instead of waiting for memory loss or imaging changes, tracking your cortisol-to-DHEA-S ratio could signal early stress damage years before cognitive symptoms arise.<\/p>\n

If your cortisol stays high while DHEA-S falls or stagnates, that\u2019s a red flag. Supporting your metabolic health, prioritizing quality sleep, and restoring hormonal balance could help keep your brain\u2019s internal environment stable long before Alzheimer\u2019s develops.<\/p>\n

Lowering Cortisol and Raising Metabolic Energy Could Reverse Brain Decline<\/p>\n

In a commentary, bioenergetic researcher Georgi Dinkov analyzed the Cureus study showing that people with Alzheimer\u2019s disease had significantly higher cortisol levels and a skewed cortisol-to-DHEA-S ratio compared to healthy adults.2 He explained that these results validate decades of bioenergetic research linking chronic stress, low metabolism, and neurodegeneration.<\/p>\n

Dinkov emphasized that it\u2019s not just elevated cortisol that drives decline \u2014 it\u2019s the imbalance between cortisol and protective steroids such as DHEA, testosterone, and progesterone. When this ratio tips toward cortisol dominance, your body remains in a chronic \u201cfight-or-flight\u201d state that accelerates tissue breakdown and cognitive loss.<\/p>\n

\u2022 Dinkov connected the findings to thyroid-driven metabolic stress \u2014 Building on the Cureus data, Dinkov explained that hypothyroidism \u2014 a sluggish thyroid that slows metabolic energy production \u2014 creates the same hormonal pattern seen in Alzheimer\u2019s patients: high cortisol and suppressed DHEA-S.<\/p>\n

When your metabolism slows, your body compensates by ramping up stress hormones to stay alert and energized. But this backfires over time, leading to chronic brain inflammation, poor glucose uptake, and reduced adenosine triphosphate (ATP) production \u2014 the energy currency your brain depends on.<\/p>\n

\u2022 Your cortisol-to-DHEA-S ratio predicts long-term health better than any single hormone \u2014 According to Dinkov, this ratio \u2014 spotlighted by the Cureus research \u2014 is among the strongest predictors of all-cause mortality and neurodegenerative risk. Even when cortisol fluctuates throughout the day, the ratio reveals whether your stress and repair systems are balanced.<\/p>\n

Dinkov suggested measuring cortisol and DHEA-S in hair or nails rather than blood, since these tissues reflect long-term hormonal patterns. For anyone trying to gauge chronic stress or cognitive risk, this offers a simple, objective biomarker that\u2019s far more reliable than a one-time blood test.<\/p>\n

\u2022 Natural compounds help restore hormonal balance and metabolic strength \u2014 Dinkov referenced several well-known substances \u2014 aspirin, niacinamide (vitamin B3), progesterone, pregnenolone, thyroid support, glycine, and emodin \u2014 that help correct the same imbalance observed in the Cureus study. These compounds work by lowering excess cortisol, improving mitochondrial energy output, and supporting the production of protective hormones.<\/p>\n

Niacinamide, for instance, increases NAD+, which fuels cellular repair, while aspirin dampens inflammation and cortisol overproduction. Used together, these tools shift your body back into a \u201crest-and-repair\u201d mode rather than the constant stress chemistry that drives brain aging.<\/p>\n

\u2022 DHEA acts as a built-in cortisol regulator \u2014 Dinkov explained one of the key ways DHEA helps keep cortisol in check: it blocks the enzyme that turns inactive cortisol back \u201con\u201d and boosts the one that clears excess cortisol from your body. This dual action makes DHEA a natural cortisol buffer that prevents the overactivation of stress pathways.<\/p>\n

In other words, DHEA gives your brain a biochemical \u201ccooling system,\u201d stopping cortisol from overheating your neurons. Supporting DHEA through thyroid health, nutrition, and targeted supplementation helps restore this essential balance.<\/p>\n

\u2022 Stress is a symptom of low energy, not just emotional strain \u2014 Dinkov described how the elevated cortisol levels observed in the Cureus Alzheimer\u2019s cohort represent a deeper issue: energy failure. When your cells don\u2019t make enough ATP \u2014 whether from poor thyroid output, nutrient deficiencies, or aging \u2014 they turn to cortisol to compensate.<\/p>\n

The hormone breaks down tissue to release fuel, but that process worsens energy depletion over time. This self-reinforcing loop explains why chronic stress feels endless: it\u2019s a metabolic, not psychological, trap. Dinkov concluded that maintaining a low cortisol-to-DHEA-S ratio protects more than memory \u2014 it sustains whole-body resilience.<\/p>\n

People who keep this ratio balanced experience better sleep, stable mood, and slower biological aging. His message is practical: by restoring thyroid function, eating enough to prevent energy deficits, and lowering chronic inflammation, you directly influence the biochemical environment that determines whether your brain decays or endures.<\/p>\n

Rebuild Your Energy System to Lower Cortisol and Protect Your Brain<\/p>\n

If you wake up tired, crash midafternoon, or feel wired when you should be asleep, your body\u2019s stress chemistry has taken over. The Cureus study3 and Dinkov\u2019s review4 both point to the same conclusion: your brain suffers when your cells can\u2019t make enough energy.<\/p>\n

To fix that, you have to restore steady fuel, retrain your stress response, and help your body recognize that it\u2019s no longer in survival mode. Here\u2019s how to bring your hormones \u2014 and your energy \u2014 back into balance:<\/p>\n

1. Feed your metabolism the fuel it\u2019s been missing \u2014 Cutting carbs keeps your body trapped in a constant stress loop because cortisol spikes whenever blood sugar drops too low. Break that pattern by eating enough healthy carbohydrates \u2014 around 250 grams daily \u2014 to give your mitochondria a steady energy supply.<\/p>\n

Start with gentle foods like fruit and white rice. When your digestion feels stable (no bloating or irregularity), add cooked root vegetables, then more vegetables, legumes, and well-tolerated whole grains. Once your body trusts it\u2019s being fed regularly, cortisol naturally declines, and your energy and focus stabilize.<\/p>\n

2. Move in ways that restore instead of deplete \u2014 Overdoing endurance exercise or high-intensity intervals keeps your body in fight-or-flight mode long after the workout ends. Cortisol stays elevated, recovery slows, and sleep suffers.<\/p>\n

Replace long, punishing sessions with physical activities that build energy rather than drain it \u2014 strength training, walking outdoors, dancing, or swimming at an easy pace. Use how you feel afterward as your guide: if you finish feeling grounded and calm, you\u2019ve helped your hormones, not hurt them.<\/p>\n

3. Train your nervous system to shift out of stress \u2014 Your breath is the fastest lever you have to quiet cortisol and activate your parasympathetic, or \u201crest and digest,\u201d system. Try rhythmic breathing patterns like 4-7-8 or 4-8 breathing \u2014 inhaling for four seconds, holding briefly, and exhaling slowly for seven to eight seconds.<\/p>\n

The extended exhale stimulates your vagus nerve, lowering heart rate and cortisol while signaling safety to every organ. Practice before bed, after meals, or whenever tension rises. Over time, your body learns that it no longer needs to live in emergency mode.<\/p>\n

4. Rebuild your circadian rhythm through light and sleep \u2014 Cortisol follows your light exposure, not your alarm clock. Get outside within an hour of waking to anchor your body\u2019s circadian rhythm, and dim screens and overhead lighting at night so melatonin can rise naturally.<\/p>\n

Keep your bedtime and wake-up times consistent \u2014 even on weekends \u2014 to lock in hormonal balance. Deep, regular sleep clears stress hormones, strengthens memory, and repairs brain tissue. If you\u2019re dragging through the day, fix your light and sleep first instead of relying on caffeine.<\/p>\n

5. Use natural progesterone to quiet the cortisol surge \u2014 Bioidentical progesterone acts as your body\u2019s built-in cortisol brake, restoring calm where chronic stress has hijacked balance. Unlike synthetic versions, natural progesterone fits perfectly into your body\u2019s own receptor system, lowering cortisol\u2019s overstimulation and supporting deep rest.<\/p>\n

FAQs About Cortisol and Alzheimer\u2019s Disease<\/p>\n

Q: What did the new Alzheimer\u2019s study reveal about cortisol and DHEA-S?
\nA: Researchers found that people with Alzheimer\u2019s disease had cortisol levels roughly 20% higher than healthy adults, while their DHEA-S levels stayed about the same. This created a skewed cortisol-to-DHEA-S ratio \u2014 meaning stress hormones were overpowering the brain\u2019s natural defenses. That imbalance, not just genetics or amyloid buildup, appears to drive the early stages of brain decline.<\/p>\n

Q: How are DHEA and DHEA-S different?
\nA: DHEA is the fast-acting form of the hormone, while DHEA-S is the stable, long-lasting form stored in your blood. Because DHEA-S changes slowly, it\u2019s a better measure of long-term stress and brain resilience. It also acts as a neurosteroid, helping neurons resist inflammation and oxidative damage while buffering cortisol\u2019s harmful effects.<\/p>\n

Q: What did Georgi Dinkov\u2019s analysis add to this research?
\nA: Dinkov explained that the Cureus study confirms a broader principle: high cortisol and low metabolic energy often go hand in hand. He connected these hormone shifts to thyroid sluggishness, nutrient depletion, and aging \u2014 all of which drain cellular energy and raise stress chemistry. He also noted that maintaining a low cortisol-to-DHEA-S ratio predicts not just better memory but longer life and greater overall resilience.<\/p>\n

Q: What practical steps help lower cortisol and restore hormonal balance?
\nA: To calm your stress system, start by fueling your metabolism. Eat enough healthy carbohydrates \u2014 about 250 grams per day \u2014 to keep blood sugar stable. Cut back on overtraining, use rhythmic breathing to activate your vagus nerve, and rebuild your circadian rhythm by getting morning sunlight and sleeping on a consistent schedule. These changes lower cortisol naturally while improving energy and mental clarity.<\/p>\n

Q: How does progesterone fit into this picture?
\nA: Natural progesterone acts as a built-in cortisol blocker. Your body recognizes it as a calming, balancing hormone that reduces overstimulation, helps you sleep deeply, and stabilizes mood. Natural progesterone effectively blocks cortisol by reducing blood concentrations, helping restore hormonal harmony, protecting your brain and body from the long-term effects of stress.<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"seo_booster_metabox":"","footnotes":""},"categories":[3562,3892],"tags":[],"class_list":["post-163802","post","type-post","status-publish","format-standard","hentry","category-baptism-confirmation","category-dr-mercola-daily-news"],"yoast_head":"\nThe Surprising Role of Cortisol in Alzheimer's - Watchman News<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/articles.mercola.com\/sites\/articles\/archive\/2026\/03\/18\/role-of-cortisol-in-alzheimers.aspx\" \/>\n<meta property=\"og:locale\" content=\"uk_UA\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"The Surprising Role of Cortisol in Alzheimer's - Watchman News\" \/>\n<meta property=\"og:description\" content=\"A New Series of Health Insights Is on the\u00a0Way IMPORTANT A New Series of Health Insights Is on the\u00a0Way Our team has been working behind the scenes to prepare new research and practical health strategies for our readers. While we finish preparing what\u2019s coming next, we invite you to explore one of the most-read articles from our library below. See exactly what's changing \u2192 Alzheimer\u2019s disease doesn\u2019t begin with memory loss \u2014 it begins years earlier with a slow, silent shift in your body\u2019s stress chemistry. Long before neurons die, your brain\u2019s hormonal balance starts to erode under constant pressure from everyday stress. The same hormones that once kept you alert and focused start working against you, wearing down your brain\u2019s repair systems and disrupting the flow of energy your cells depend on. Cortisol, the body\u2019s main stress hormone, plays a central role in this process. When it stays high for too long, it drains your metabolic reserves and interferes with memory formation. Meanwhile, a second hormone called DHEA-S acts as cortisol\u2019s natural counterbalance, helping protect neurons and stabilize brain function. When the ratio between these two hormones tilts toward cortisol, your brain loses its resilience and becomes more vulnerable to aging and degeneration. This hormonal tug-of-war \u2014 shaped by stress, diet, and metabolism \u2014 has drawn new attention from researchers exploring why some people develop Alzheimer\u2019s while others do not. The latest findings suggest that long-term hormonal imbalance, not just genetics or plaque buildup, could be one of the earliest warning signs of decline. Understanding this relationship changes how you think about prevention. By strengthening your metabolism, restoring hormonal balance, and reducing chronic stress, you can support your brain\u2019s ability to heal and adapt \u2014 long before symptoms appear. The new research provides a roadmap for how to start. Stress Hormones Tip the Balance Toward Alzheimer\u2019s A clinical study published in Cureus examined 85 adults in Serbia \u2014 45 with diagnosed Alzheimer\u2019s disease and 40 healthy peers of similar age and sex \u2014 to determine how two hormones, cortisol and DHEA-S, relate to brain health.1 Cortisol is your body\u2019s main stress hormone, while DHEA-S (dehydroepiandrosterone sulfate) acts as its built-in counterbalance \u2014 a neurosteroid that supports brain resilience and energy metabolism. Unlike DHEA, which is the fast-acting, active form, DHEA-S is its sulfated storage form that circulates in your blood far longer and provides a more stable picture of long-term stress balance. By focusing on DHEA-S, the researchers could better gauge chronic stress effects on the brain rather than short-term fluctuations. The scientists wanted to know whether Alzheimer\u2019s patients showed measurable differences in these hormones or in their ratio, which indicates how well your body manages prolonged stress. \u2022 People with Alzheimer\u2019s had higher cortisol levels but not lower DHEA-S \u2014 Those with Alzheimer\u2019s showed cortisol levels averaging nearly 399 nanomoles per liter (nmol\/L) \u2014 about 20% higher than healthy adults \u2014 yet their DHEA-S concentrations stayed roughly the same. This imbalance means the stress response remains chronically activated without the brain\u2019s natural protection. When cortisol dominates, neurons experience more inflammation and less regeneration. The study also noted that this skewed balance was strongest among participants aged 65 to 75, suggesting that middle-to-late adulthood is when stress hormones begin exerting their most damaging effects. \u2022 The cortisol-to-DHEA-S ratio proved to be the real warning sign \u2014 Although each hormone alone tells part of the story, the researchers emphasized that their ratio \u2014 how much cortisol outweighs DHEA-S \u2014 offers a clearer window into chronic stress and brain decline. In Alzheimer\u2019s patients, that ratio climbed steeply, implying that the body\u2019s defense system against cortisol\u2019s toxicity was failing. This finding helps explain why some people with normal cortisol readings still experience cognitive decline: it\u2019s the imbalance, not just the level, that matters. \u2022 Men and women responded differently, revealing hormonal sensitivity \u2014 In healthy adults, men had significantly higher DHEA-S levels than women, meaning their brains could have greater protection from chronic stress. But that sex difference disappeared in those with Alzheimer\u2019s. The disease seemed to override normal hormonal patterns, flattening DHEA-S levels in both sexes. This means that once neurodegeneration begins, your brain\u2019s ability to maintain hormonal balance \u2014 one of its self-defense tools \u2014 breaks down. \u2022 Age changed the picture again, suggesting a nonlinear hormonal response \u2014 When researchers divided participants by age, they noticed that younger Alzheimer\u2019s patients (60 to 65) had higher DHEA-S levels, which dropped sharply in the 66 to 75 group before rising again after age 75. This unexpected curve points to a possible window of hormonal collapse, where midlife stress overwhelms the body\u2019s compensatory systems. If you\u2019re in this age range and facing chronic stress, that\u2019s when intervention \u2014 stress reduction, adequate rest, and metabolic support \u2014 could be most protective for your brain. Cortisol Acts Like an Overzealous Cleanup Crew That Damages What It\u2019s Meant to Protect Elevated cortisol increases inflammation and oxidative stress \u2014 chemical reactions that corrode neurons and disrupt communication between brain cells. It also suppresses the growth of new neurons in your hippocampus, the brain\u2019s memory center, making it harder to store new information. In contrast, DHEA-S supports neuronal survival, enhances energy metabolism, and shields brain tissue from the harmful effects of excessive cortisol. When cortisol wins this hormonal tug-of-war, brain networks lose their flexibility and begin to deteriorate. \u2022 Why stress and memory loss are so tightly linked \u2014 Chronic cortisol elevation interferes with glucose uptake in brain cells, depriving them of the fuel needed to form memories. It also increases amyloid-beta and tau accumulation \u2014 the same proteins that define Alzheimer\u2019s pathology. Meanwhile, DHEA-S helps counter these effects by enhancing insulin sensitivity and calming overactive immune responses in your brain. In simple terms, one hormone burns your mental circuits, the other repairs them. \u2022 A new biological marker for early intervention \u2014 Instead of waiting for memory loss or imaging changes, tracking your cortisol-to-DHEA-S ratio could signal early stress damage years before cognitive symptoms arise. If your cortisol stays high while DHEA-S falls or stagnates, that\u2019s a red flag. Supporting your metabolic health, prioritizing quality sleep, and restoring hormonal balance could help keep your brain\u2019s internal environment stable long before Alzheimer\u2019s develops. Lowering Cortisol and Raising Metabolic Energy Could Reverse Brain Decline In a commentary, bioenergetic researcher Georgi Dinkov analyzed the Cureus study showing that people with Alzheimer\u2019s disease had significantly higher cortisol levels and a skewed cortisol-to-DHEA-S ratio compared to healthy adults.2 He explained that these results validate decades of bioenergetic research linking chronic stress, low metabolism, and neurodegeneration. Dinkov emphasized that it\u2019s not just elevated cortisol that drives decline \u2014 it\u2019s the imbalance between cortisol and protective steroids such as DHEA, testosterone, and progesterone. When this ratio tips toward cortisol dominance, your body remains in a chronic \u201cfight-or-flight\u201d state that accelerates tissue breakdown and cognitive loss. \u2022 Dinkov connected the findings to thyroid-driven metabolic stress \u2014 Building on the Cureus data, Dinkov explained that hypothyroidism \u2014 a sluggish thyroid that slows metabolic energy production \u2014 creates the same hormonal pattern seen in Alzheimer\u2019s patients: high cortisol and suppressed DHEA-S. When your metabolism slows, your body compensates by ramping up stress hormones to stay alert and energized. But this backfires over time, leading to chronic brain inflammation, poor glucose uptake, and reduced adenosine triphosphate (ATP) production \u2014 the energy currency your brain depends on. \u2022 Your cortisol-to-DHEA-S ratio predicts long-term health better than any single hormone \u2014 According to Dinkov, this ratio \u2014 spotlighted by the Cureus research \u2014 is among the strongest predictors of all-cause mortality and neurodegenerative risk. Even when cortisol fluctuates throughout the day, the ratio reveals whether your stress and repair systems are balanced. Dinkov suggested measuring cortisol and DHEA-S in hair or nails rather than blood, since these tissues reflect long-term hormonal patterns. For anyone trying to gauge chronic stress or cognitive risk, this offers a simple, objective biomarker that\u2019s far more reliable than a one-time blood test. \u2022 Natural compounds help restore hormonal balance and metabolic strength \u2014 Dinkov referenced several well-known substances \u2014 aspirin, niacinamide (vitamin B3), progesterone, pregnenolone, thyroid support, glycine, and emodin \u2014 that help correct the same imbalance observed in the Cureus study. These compounds work by lowering excess cortisol, improving mitochondrial energy output, and supporting the production of protective hormones. Niacinamide, for instance, increases NAD+, which fuels cellular repair, while aspirin dampens inflammation and cortisol overproduction. Used together, these tools shift your body back into a \u201crest-and-repair\u201d mode rather than the constant stress chemistry that drives brain aging. \u2022 DHEA acts as a built-in cortisol regulator \u2014 Dinkov explained one of the key ways DHEA helps keep cortisol in check: it blocks the enzyme that turns inactive cortisol back \u201con\u201d and boosts the one that clears excess cortisol from your body. This dual action makes DHEA a natural cortisol buffer that prevents the overactivation of stress pathways. In other words, DHEA gives your brain a biochemical \u201ccooling system,\u201d stopping cortisol from overheating your neurons. Supporting DHEA through thyroid health, nutrition, and targeted supplementation helps restore this essential balance. \u2022 Stress is a symptom of low energy, not just emotional strain \u2014 Dinkov described how the elevated cortisol levels observed in the Cureus Alzheimer\u2019s cohort represent a deeper issue: energy failure. When your cells don\u2019t make enough ATP \u2014 whether from poor thyroid output, nutrient deficiencies, or aging \u2014 they turn to cortisol to compensate. The hormone breaks down tissue to release fuel, but that process worsens energy depletion over time. This self-reinforcing loop explains why chronic stress feels endless: it\u2019s a metabolic, not psychological, trap. Dinkov concluded that maintaining a low cortisol-to-DHEA-S ratio protects more than memory \u2014 it sustains whole-body resilience. People who keep this ratio balanced experience better sleep, stable mood, and slower biological aging. His message is practical: by restoring thyroid function, eating enough to prevent energy deficits, and lowering chronic inflammation, you directly influence the biochemical environment that determines whether your brain decays or endures. Rebuild Your Energy System to Lower Cortisol and Protect Your Brain If you wake up tired, crash midafternoon, or feel wired when you should be asleep, your body\u2019s stress chemistry has taken over. The Cureus study3 and Dinkov\u2019s review4 both point to the same conclusion: your brain suffers when your cells can\u2019t make enough energy. To fix that, you have to restore steady fuel, retrain your stress response, and help your body recognize that it\u2019s no longer in survival mode. Here\u2019s how to bring your hormones \u2014 and your energy \u2014 back into balance: 1. Feed your metabolism the fuel it\u2019s been missing \u2014 Cutting carbs keeps your body trapped in a constant stress loop because cortisol spikes whenever blood sugar drops too low. Break that pattern by eating enough healthy carbohydrates \u2014 around 250 grams daily \u2014 to give your mitochondria a steady energy supply. Start with gentle foods like fruit and white rice. When your digestion feels stable (no bloating or irregularity), add cooked root vegetables, then more vegetables, legumes, and well-tolerated whole grains. Once your body trusts it\u2019s being fed regularly, cortisol naturally declines, and your energy and focus stabilize. 2. Move in ways that restore instead of deplete \u2014 Overdoing endurance exercise or high-intensity intervals keeps your body in fight-or-flight mode long after the workout ends. Cortisol stays elevated, recovery slows, and sleep suffers. Replace long, punishing sessions with physical activities that build energy rather than drain it \u2014 strength training, walking outdoors, dancing, or swimming at an easy pace. Use how you feel afterward as your guide: if you finish feeling grounded and calm, you\u2019ve helped your hormones, not hurt them. 3. Train your nervous system to shift out of stress \u2014 Your breath is the fastest lever you have to quiet cortisol and activate your parasympathetic, or \u201crest and digest,\u201d system. Try rhythmic breathing patterns like 4-7-8 or 4-8 breathing \u2014 inhaling for four seconds, holding briefly, and exhaling slowly for seven to eight seconds. The extended exhale stimulates your vagus nerve, lowering heart rate and cortisol while signaling safety to every organ. Practice before bed, after meals, or whenever tension rises. Over time, your body learns that it no longer needs to live in emergency mode. 4. Rebuild your circadian rhythm through light and sleep \u2014 Cortisol follows your light exposure, not your alarm clock. Get outside within an hour of waking to anchor your body\u2019s circadian rhythm, and dim screens and overhead lighting at night so melatonin can rise naturally. Keep your bedtime and wake-up times consistent \u2014 even on weekends \u2014 to lock in hormonal balance. Deep, regular sleep clears stress hormones, strengthens memory, and repairs brain tissue. If you\u2019re dragging through the day, fix your light and sleep first instead of relying on caffeine. 5. Use natural progesterone to quiet the cortisol surge \u2014 Bioidentical progesterone acts as your body\u2019s built-in cortisol brake, restoring calm where chronic stress has hijacked balance. Unlike synthetic versions, natural progesterone fits perfectly into your body\u2019s own receptor system, lowering cortisol\u2019s overstimulation and supporting deep rest. FAQs About Cortisol and Alzheimer\u2019s Disease Q: What did the new Alzheimer\u2019s study reveal about cortisol and DHEA-S? A: Researchers found that people with Alzheimer\u2019s disease had cortisol levels roughly 20% higher than healthy adults, while their DHEA-S levels stayed about the same. This created a skewed cortisol-to-DHEA-S ratio \u2014 meaning stress hormones were overpowering the brain\u2019s natural defenses. That imbalance, not just genetics or amyloid buildup, appears to drive the early stages of brain decline. Q: How are DHEA and DHEA-S different? A: DHEA is the fast-acting form of the hormone, while DHEA-S is the stable, long-lasting form stored in your blood. Because DHEA-S changes slowly, it\u2019s a better measure of long-term stress and brain resilience. It also acts as a neurosteroid, helping neurons resist inflammation and oxidative damage while buffering cortisol\u2019s harmful effects. Q: What did Georgi Dinkov\u2019s analysis add to this research? A: Dinkov explained that the Cureus study confirms a broader principle: high cortisol and low metabolic energy often go hand in hand. He connected these hormone shifts to thyroid sluggishness, nutrient depletion, and aging \u2014 all of which drain cellular energy and raise stress chemistry. He also noted that maintaining a low cortisol-to-DHEA-S ratio predicts not just better memory but longer life and greater overall resilience. Q: What practical steps help lower cortisol and restore hormonal balance? A: To calm your stress system, start by fueling your metabolism. Eat enough healthy carbohydrates \u2014 about 250 grams per day \u2014 to keep blood sugar stable. Cut back on overtraining, use rhythmic breathing to activate your vagus nerve, and rebuild your circadian rhythm by getting morning sunlight and sleeping on a consistent schedule. These changes lower cortisol naturally while improving energy and mental clarity. Q: How does progesterone fit into this picture? A: Natural progesterone acts as a built-in cortisol blocker. Your body recognizes it as a calming, balancing hormone that reduces overstimulation, helps you sleep deeply, and stabilizes mood. Natural progesterone effectively blocks cortisol by reducing blood concentrations, helping restore hormonal harmony, protecting your brain and body from the long-term effects of stress.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/articles.mercola.com\/sites\/articles\/archive\/2026\/03\/18\/role-of-cortisol-in-alzheimers.aspx\" \/>\n<meta property=\"og:site_name\" content=\"Watchman News\" \/>\n<meta property=\"article:published_time\" content=\"2026-03-18T00:00:00+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2026-03-22T20:18:27+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/media.mercola.com\/assets\/images\/mercola\/bestarticles-icon.png\" \/>\n<meta name=\"author\" content=\"Admin\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u041d\u0430\u043f\u0438\u0441\u0430\u043d\u043e\" \/>\n\t<meta name=\"twitter:data1\" content=\"Admin\" \/>\n\t<meta name=\"twitter:label2\" content=\"\u041f\u0440\u0438\u0431\u043b. \u0447\u0430\u0441 \u0447\u0438\u0442\u0430\u043d\u043d\u044f\" \/>\n\t<meta name=\"twitter:data2\" content=\"13 \u0445\u0432\u0438\u043b\u0438\u043d\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/articles.mercola.com\/sites\/articles\/archive\/2026\/03\/18\/role-of-cortisol-in-alzheimers.aspx#article\",\"isPartOf\":{\"@id\":\"https:\/\/watchman.news\/2026\/03\/the-surprising-role-of-cortisol-in-alzheimers\/\"},\"author\":{\"name\":\"Admin\",\"@id\":\"https:\/\/watchman.news\/#\/schema\/person\/3f4506c6002f5893ba45478a4540739f\"},\"headline\":\"The Surprising Role of Cortisol in Alzheimer’s\",\"datePublished\":\"2026-03-18T00:00:00+00:00\",\"dateModified\":\"2026-03-22T20:18:27+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/watchman.news\/2026\/03\/the-surprising-role-of-cortisol-in-alzheimers\/\"},\"wordCount\":2509,\"commentCount\":0,\"image\":{\"@id\":\"https:\/\/articles.mercola.com\/sites\/articles\/archive\/2026\/03\/18\/role-of-cortisol-in-alzheimers.aspx#primaryimage\"},\"thumbnailUrl\":\"https:\/\/media.mercola.com\/assets\/images\/mercola\/bestarticles-icon.png\",\"articleSection\":[\"Baptism & Confirmation\",\"Dr Mercola Daily News\"],\"inLanguage\":\"uk\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\/\/articles.mercola.com\/sites\/articles\/archive\/2026\/03\/18\/role-of-cortisol-in-alzheimers.aspx#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/watchman.news\/2026\/03\/the-surprising-role-of-cortisol-in-alzheimers\/\",\"url\":\"https:\/\/articles.mercola.com\/sites\/articles\/archive\/2026\/03\/18\/role-of-cortisol-in-alzheimers.aspx\",\"name\":\"The Surprising Role of Cortisol in Alzheimer's - 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Watchman News","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/articles.mercola.com\/sites\/articles\/archive\/2026\/03\/18\/role-of-cortisol-in-alzheimers.aspx","og_locale":"uk_UA","og_type":"article","og_title":"The Surprising Role of Cortisol in Alzheimer's - Watchman News","og_description":"A New Series of Health Insights Is on the\u00a0Way IMPORTANT A New Series of Health Insights Is on the\u00a0Way Our team has been working behind the scenes to prepare new research and practical health strategies for our readers. While we finish preparing what\u2019s coming next, we invite you to explore one of the most-read articles from our library below. See exactly what's changing \u2192 Alzheimer\u2019s disease doesn\u2019t begin with memory loss \u2014 it begins years earlier with a slow, silent shift in your body\u2019s stress chemistry. Long before neurons die, your brain\u2019s hormonal balance starts to erode under constant pressure from everyday stress. The same hormones that once kept you alert and focused start working against you, wearing down your brain\u2019s repair systems and disrupting the flow of energy your cells depend on. Cortisol, the body\u2019s main stress hormone, plays a central role in this process. When it stays high for too long, it drains your metabolic reserves and interferes with memory formation. Meanwhile, a second hormone called DHEA-S acts as cortisol\u2019s natural counterbalance, helping protect neurons and stabilize brain function. When the ratio between these two hormones tilts toward cortisol, your brain loses its resilience and becomes more vulnerable to aging and degeneration. This hormonal tug-of-war \u2014 shaped by stress, diet, and metabolism \u2014 has drawn new attention from researchers exploring why some people develop Alzheimer\u2019s while others do not. The latest findings suggest that long-term hormonal imbalance, not just genetics or plaque buildup, could be one of the earliest warning signs of decline. Understanding this relationship changes how you think about prevention. By strengthening your metabolism, restoring hormonal balance, and reducing chronic stress, you can support your brain\u2019s ability to heal and adapt \u2014 long before symptoms appear. The new research provides a roadmap for how to start. Stress Hormones Tip the Balance Toward Alzheimer\u2019s A clinical study published in Cureus examined 85 adults in Serbia \u2014 45 with diagnosed Alzheimer\u2019s disease and 40 healthy peers of similar age and sex \u2014 to determine how two hormones, cortisol and DHEA-S, relate to brain health.1 Cortisol is your body\u2019s main stress hormone, while DHEA-S (dehydroepiandrosterone sulfate) acts as its built-in counterbalance \u2014 a neurosteroid that supports brain resilience and energy metabolism. Unlike DHEA, which is the fast-acting, active form, DHEA-S is its sulfated storage form that circulates in your blood far longer and provides a more stable picture of long-term stress balance. By focusing on DHEA-S, the researchers could better gauge chronic stress effects on the brain rather than short-term fluctuations. The scientists wanted to know whether Alzheimer\u2019s patients showed measurable differences in these hormones or in their ratio, which indicates how well your body manages prolonged stress. \u2022 People with Alzheimer\u2019s had higher cortisol levels but not lower DHEA-S \u2014 Those with Alzheimer\u2019s showed cortisol levels averaging nearly 399 nanomoles per liter (nmol\/L) \u2014 about 20% higher than healthy adults \u2014 yet their DHEA-S concentrations stayed roughly the same. This imbalance means the stress response remains chronically activated without the brain\u2019s natural protection. When cortisol dominates, neurons experience more inflammation and less regeneration. The study also noted that this skewed balance was strongest among participants aged 65 to 75, suggesting that middle-to-late adulthood is when stress hormones begin exerting their most damaging effects. \u2022 The cortisol-to-DHEA-S ratio proved to be the real warning sign \u2014 Although each hormone alone tells part of the story, the researchers emphasized that their ratio \u2014 how much cortisol outweighs DHEA-S \u2014 offers a clearer window into chronic stress and brain decline. In Alzheimer\u2019s patients, that ratio climbed steeply, implying that the body\u2019s defense system against cortisol\u2019s toxicity was failing. This finding helps explain why some people with normal cortisol readings still experience cognitive decline: it\u2019s the imbalance, not just the level, that matters. \u2022 Men and women responded differently, revealing hormonal sensitivity \u2014 In healthy adults, men had significantly higher DHEA-S levels than women, meaning their brains could have greater protection from chronic stress. But that sex difference disappeared in those with Alzheimer\u2019s. The disease seemed to override normal hormonal patterns, flattening DHEA-S levels in both sexes. This means that once neurodegeneration begins, your brain\u2019s ability to maintain hormonal balance \u2014 one of its self-defense tools \u2014 breaks down. \u2022 Age changed the picture again, suggesting a nonlinear hormonal response \u2014 When researchers divided participants by age, they noticed that younger Alzheimer\u2019s patients (60 to 65) had higher DHEA-S levels, which dropped sharply in the 66 to 75 group before rising again after age 75. This unexpected curve points to a possible window of hormonal collapse, where midlife stress overwhelms the body\u2019s compensatory systems. If you\u2019re in this age range and facing chronic stress, that\u2019s when intervention \u2014 stress reduction, adequate rest, and metabolic support \u2014 could be most protective for your brain. Cortisol Acts Like an Overzealous Cleanup Crew That Damages What It\u2019s Meant to Protect Elevated cortisol increases inflammation and oxidative stress \u2014 chemical reactions that corrode neurons and disrupt communication between brain cells. It also suppresses the growth of new neurons in your hippocampus, the brain\u2019s memory center, making it harder to store new information. In contrast, DHEA-S supports neuronal survival, enhances energy metabolism, and shields brain tissue from the harmful effects of excessive cortisol. When cortisol wins this hormonal tug-of-war, brain networks lose their flexibility and begin to deteriorate. \u2022 Why stress and memory loss are so tightly linked \u2014 Chronic cortisol elevation interferes with glucose uptake in brain cells, depriving them of the fuel needed to form memories. It also increases amyloid-beta and tau accumulation \u2014 the same proteins that define Alzheimer\u2019s pathology. Meanwhile, DHEA-S helps counter these effects by enhancing insulin sensitivity and calming overactive immune responses in your brain. In simple terms, one hormone burns your mental circuits, the other repairs them. \u2022 A new biological marker for early intervention \u2014 Instead of waiting for memory loss or imaging changes, tracking your cortisol-to-DHEA-S ratio could signal early stress damage years before cognitive symptoms arise. If your cortisol stays high while DHEA-S falls or stagnates, that\u2019s a red flag. Supporting your metabolic health, prioritizing quality sleep, and restoring hormonal balance could help keep your brain\u2019s internal environment stable long before Alzheimer\u2019s develops. Lowering Cortisol and Raising Metabolic Energy Could Reverse Brain Decline In a commentary, bioenergetic researcher Georgi Dinkov analyzed the Cureus study showing that people with Alzheimer\u2019s disease had significantly higher cortisol levels and a skewed cortisol-to-DHEA-S ratio compared to healthy adults.2 He explained that these results validate decades of bioenergetic research linking chronic stress, low metabolism, and neurodegeneration. Dinkov emphasized that it\u2019s not just elevated cortisol that drives decline \u2014 it\u2019s the imbalance between cortisol and protective steroids such as DHEA, testosterone, and progesterone. When this ratio tips toward cortisol dominance, your body remains in a chronic \u201cfight-or-flight\u201d state that accelerates tissue breakdown and cognitive loss. \u2022 Dinkov connected the findings to thyroid-driven metabolic stress \u2014 Building on the Cureus data, Dinkov explained that hypothyroidism \u2014 a sluggish thyroid that slows metabolic energy production \u2014 creates the same hormonal pattern seen in Alzheimer\u2019s patients: high cortisol and suppressed DHEA-S. When your metabolism slows, your body compensates by ramping up stress hormones to stay alert and energized. But this backfires over time, leading to chronic brain inflammation, poor glucose uptake, and reduced adenosine triphosphate (ATP) production \u2014 the energy currency your brain depends on. \u2022 Your cortisol-to-DHEA-S ratio predicts long-term health better than any single hormone \u2014 According to Dinkov, this ratio \u2014 spotlighted by the Cureus research \u2014 is among the strongest predictors of all-cause mortality and neurodegenerative risk. Even when cortisol fluctuates throughout the day, the ratio reveals whether your stress and repair systems are balanced. Dinkov suggested measuring cortisol and DHEA-S in hair or nails rather than blood, since these tissues reflect long-term hormonal patterns. For anyone trying to gauge chronic stress or cognitive risk, this offers a simple, objective biomarker that\u2019s far more reliable than a one-time blood test. \u2022 Natural compounds help restore hormonal balance and metabolic strength \u2014 Dinkov referenced several well-known substances \u2014 aspirin, niacinamide (vitamin B3), progesterone, pregnenolone, thyroid support, glycine, and emodin \u2014 that help correct the same imbalance observed in the Cureus study. These compounds work by lowering excess cortisol, improving mitochondrial energy output, and supporting the production of protective hormones. Niacinamide, for instance, increases NAD+, which fuels cellular repair, while aspirin dampens inflammation and cortisol overproduction. Used together, these tools shift your body back into a \u201crest-and-repair\u201d mode rather than the constant stress chemistry that drives brain aging. \u2022 DHEA acts as a built-in cortisol regulator \u2014 Dinkov explained one of the key ways DHEA helps keep cortisol in check: it blocks the enzyme that turns inactive cortisol back \u201con\u201d and boosts the one that clears excess cortisol from your body. This dual action makes DHEA a natural cortisol buffer that prevents the overactivation of stress pathways. In other words, DHEA gives your brain a biochemical \u201ccooling system,\u201d stopping cortisol from overheating your neurons. Supporting DHEA through thyroid health, nutrition, and targeted supplementation helps restore this essential balance. \u2022 Stress is a symptom of low energy, not just emotional strain \u2014 Dinkov described how the elevated cortisol levels observed in the Cureus Alzheimer\u2019s cohort represent a deeper issue: energy failure. When your cells don\u2019t make enough ATP \u2014 whether from poor thyroid output, nutrient deficiencies, or aging \u2014 they turn to cortisol to compensate. The hormone breaks down tissue to release fuel, but that process worsens energy depletion over time. This self-reinforcing loop explains why chronic stress feels endless: it\u2019s a metabolic, not psychological, trap. Dinkov concluded that maintaining a low cortisol-to-DHEA-S ratio protects more than memory \u2014 it sustains whole-body resilience. People who keep this ratio balanced experience better sleep, stable mood, and slower biological aging. His message is practical: by restoring thyroid function, eating enough to prevent energy deficits, and lowering chronic inflammation, you directly influence the biochemical environment that determines whether your brain decays or endures. Rebuild Your Energy System to Lower Cortisol and Protect Your Brain If you wake up tired, crash midafternoon, or feel wired when you should be asleep, your body\u2019s stress chemistry has taken over. The Cureus study3 and Dinkov\u2019s review4 both point to the same conclusion: your brain suffers when your cells can\u2019t make enough energy. To fix that, you have to restore steady fuel, retrain your stress response, and help your body recognize that it\u2019s no longer in survival mode. Here\u2019s how to bring your hormones \u2014 and your energy \u2014 back into balance: 1. Feed your metabolism the fuel it\u2019s been missing \u2014 Cutting carbs keeps your body trapped in a constant stress loop because cortisol spikes whenever blood sugar drops too low. Break that pattern by eating enough healthy carbohydrates \u2014 around 250 grams daily \u2014 to give your mitochondria a steady energy supply. Start with gentle foods like fruit and white rice. When your digestion feels stable (no bloating or irregularity), add cooked root vegetables, then more vegetables, legumes, and well-tolerated whole grains. Once your body trusts it\u2019s being fed regularly, cortisol naturally declines, and your energy and focus stabilize. 2. Move in ways that restore instead of deplete \u2014 Overdoing endurance exercise or high-intensity intervals keeps your body in fight-or-flight mode long after the workout ends. Cortisol stays elevated, recovery slows, and sleep suffers. Replace long, punishing sessions with physical activities that build energy rather than drain it \u2014 strength training, walking outdoors, dancing, or swimming at an easy pace. Use how you feel afterward as your guide: if you finish feeling grounded and calm, you\u2019ve helped your hormones, not hurt them. 3. Train your nervous system to shift out of stress \u2014 Your breath is the fastest lever you have to quiet cortisol and activate your parasympathetic, or \u201crest and digest,\u201d system. Try rhythmic breathing patterns like 4-7-8 or 4-8 breathing \u2014 inhaling for four seconds, holding briefly, and exhaling slowly for seven to eight seconds. The extended exhale stimulates your vagus nerve, lowering heart rate and cortisol while signaling safety to every organ. Practice before bed, after meals, or whenever tension rises. Over time, your body learns that it no longer needs to live in emergency mode. 4. Rebuild your circadian rhythm through light and sleep \u2014 Cortisol follows your light exposure, not your alarm clock. Get outside within an hour of waking to anchor your body\u2019s circadian rhythm, and dim screens and overhead lighting at night so melatonin can rise naturally. Keep your bedtime and wake-up times consistent \u2014 even on weekends \u2014 to lock in hormonal balance. Deep, regular sleep clears stress hormones, strengthens memory, and repairs brain tissue. If you\u2019re dragging through the day, fix your light and sleep first instead of relying on caffeine. 5. Use natural progesterone to quiet the cortisol surge \u2014 Bioidentical progesterone acts as your body\u2019s built-in cortisol brake, restoring calm where chronic stress has hijacked balance. Unlike synthetic versions, natural progesterone fits perfectly into your body\u2019s own receptor system, lowering cortisol\u2019s overstimulation and supporting deep rest. FAQs About Cortisol and Alzheimer\u2019s Disease Q: What did the new Alzheimer\u2019s study reveal about cortisol and DHEA-S? A: Researchers found that people with Alzheimer\u2019s disease had cortisol levels roughly 20% higher than healthy adults, while their DHEA-S levels stayed about the same. This created a skewed cortisol-to-DHEA-S ratio \u2014 meaning stress hormones were overpowering the brain\u2019s natural defenses. That imbalance, not just genetics or amyloid buildup, appears to drive the early stages of brain decline. Q: How are DHEA and DHEA-S different? A: DHEA is the fast-acting form of the hormone, while DHEA-S is the stable, long-lasting form stored in your blood. Because DHEA-S changes slowly, it\u2019s a better measure of long-term stress and brain resilience. It also acts as a neurosteroid, helping neurons resist inflammation and oxidative damage while buffering cortisol\u2019s harmful effects. Q: What did Georgi Dinkov\u2019s analysis add to this research? A: Dinkov explained that the Cureus study confirms a broader principle: high cortisol and low metabolic energy often go hand in hand. He connected these hormone shifts to thyroid sluggishness, nutrient depletion, and aging \u2014 all of which drain cellular energy and raise stress chemistry. He also noted that maintaining a low cortisol-to-DHEA-S ratio predicts not just better memory but longer life and greater overall resilience. Q: What practical steps help lower cortisol and restore hormonal balance? A: To calm your stress system, start by fueling your metabolism. Eat enough healthy carbohydrates \u2014 about 250 grams per day \u2014 to keep blood sugar stable. Cut back on overtraining, use rhythmic breathing to activate your vagus nerve, and rebuild your circadian rhythm by getting morning sunlight and sleeping on a consistent schedule. These changes lower cortisol naturally while improving energy and mental clarity. Q: How does progesterone fit into this picture? A: Natural progesterone acts as a built-in cortisol blocker. Your body recognizes it as a calming, balancing hormone that reduces overstimulation, helps you sleep deeply, and stabilizes mood. Natural progesterone effectively blocks cortisol by reducing blood concentrations, helping restore hormonal harmony, protecting your brain and body from the long-term effects of stress.","og_url":"https:\/\/articles.mercola.com\/sites\/articles\/archive\/2026\/03\/18\/role-of-cortisol-in-alzheimers.aspx","og_site_name":"Watchman News","article_published_time":"2026-03-18T00:00:00+00:00","article_modified_time":"2026-03-22T20:18:27+00:00","og_image":[{"url":"https:\/\/media.mercola.com\/assets\/images\/mercola\/bestarticles-icon.png","type":"","width":"","height":""}],"author":"Admin","twitter_card":"summary_large_image","twitter_misc":{"\u041d\u0430\u043f\u0438\u0441\u0430\u043d\u043e":"Admin","\u041f\u0440\u0438\u0431\u043b. \u0447\u0430\u0441 \u0447\u0438\u0442\u0430\u043d\u043d\u044f":"13 \u0445\u0432\u0438\u043b\u0438\u043d"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/articles.mercola.com\/sites\/articles\/archive\/2026\/03\/18\/role-of-cortisol-in-alzheimers.aspx#article","isPartOf":{"@id":"https:\/\/watchman.news\/2026\/03\/the-surprising-role-of-cortisol-in-alzheimers\/"},"author":{"name":"Admin","@id":"https:\/\/watchman.news\/#\/schema\/person\/3f4506c6002f5893ba45478a4540739f"},"headline":"The Surprising Role of Cortisol in Alzheimer’s","datePublished":"2026-03-18T00:00:00+00:00","dateModified":"2026-03-22T20:18:27+00:00","mainEntityOfPage":{"@id":"https:\/\/watchman.news\/2026\/03\/the-surprising-role-of-cortisol-in-alzheimers\/"},"wordCount":2509,"commentCount":0,"image":{"@id":"https:\/\/articles.mercola.com\/sites\/articles\/archive\/2026\/03\/18\/role-of-cortisol-in-alzheimers.aspx#primaryimage"},"thumbnailUrl":"https:\/\/media.mercola.com\/assets\/images\/mercola\/bestarticles-icon.png","articleSection":["Baptism & Confirmation","Dr Mercola Daily News"],"inLanguage":"uk","potentialAction":[{"@type":"CommentAction","name":"Comment","target":["https:\/\/articles.mercola.com\/sites\/articles\/archive\/2026\/03\/18\/role-of-cortisol-in-alzheimers.aspx#respond"]}]},{"@type":"WebPage","@id":"https:\/\/watchman.news\/2026\/03\/the-surprising-role-of-cortisol-in-alzheimers\/","url":"https:\/\/articles.mercola.com\/sites\/articles\/archive\/2026\/03\/18\/role-of-cortisol-in-alzheimers.aspx","name":"The Surprising Role of Cortisol in Alzheimer's - 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