Weekly Health Quiz: Healthy Butyrate Sources, Your Thirsty Brain, and Drinking Turmeric Water

1 How do colonocytes help maintain a healthy gut lining?

• They use butyrate to support the gut barrier
  

  Colonocytes are the cells that line the colon. When they have enough butyrate, they help keep the gut barrier tight, intact, and better protected. Learn more.

• They remove oxygen from the bloodstream
• They turn stomach acid into digestive enzymes
• They store glucose for long-term energy use

2 What brain chemical is involved in restless legs syndrome (RLS)?

• Serotonin
• Cortisol
• Acetylcholine
• Dopamine

  Dopamine helps regulate movement. Restless legs syndrome (RLS) is linked to dopamine signaling, which is why some treatments mimic dopamine activity. Learn more.

3 If fermentable fiber causes bloating, how should it be reintroduced?

• Add olive oil to salads and sauces first
• Choose only inulin-rich foods at first
• Add one source at a time in small amounts

  Fermentable fiber can overwhelm a sensitive gut when added too quickly. Small amounts, one source at a time, help butyrate-producing bacteria adjust. Learn more.

• Use large servings to feed gut bacteria faster

4 What is the function of the glymphatic system?

• Clears waste from the brain during sleep

  The glymphatic system acts like the brain’s cleanup network during sleep. It helps clear waste products and metabolic debris that build up during the day. Learn more.

• Stores extra water inside brain tissue
• Produces hormones that control thirst
• Sends oxygen from the lungs to the brain

5 What vitamin does the Bacillus genus help produce by converting sugar?

• Vitamin D
• Vitamin B12
• Vitamin K
• Vitamin C

  The Bacillus genus helps convert sugar into vitamin C. It is also involved in producing vitamin K in the gut, which works with vitamin D. Learn more.

6 Which of these physical activities can help improve sleep quality?

• Sprinting
• Walking

  Regular walking, especially during the day, helps support melatonin production and a healthy circadian rhythm. Learn more.

• Heavy lifting
• Long-distance cycling

7 What is the main barrier material in real foil supplement packaging?

• Polycarbonate
• Polyvinyl chloride (PVC)
• Aluminum

  Aluminum does the main barrier work in real foil packaging by helping keep oxygen away from sensitive powders. Learn more.

• Bisphenol A (BPA)

8 Which of these strategies can help lower high iron levels?

• Taking extra vitamin C
• Eating more red meat
• Drinking more iron supplements
• Donating blood

  Donating blood helps lower excess iron. If blood donation is not an option, a doctor may use therapeutic phlebotomy to remove blood safely. Learn more.

9 What toxic compound does alcohol produce in the liver?

• Glutathione
• Lactic acid
• Acetaldehyde

  When alcohol is broken down in the liver, it produces acetaldehyde. This harmful toxin increases oxidative stress and damages liver cells through free radicals. Learn more.

• Bile acid

10 What hydrogen level, measured in parts per million (ppm), should hydrogen-rich water tablets generate?

• 2 to 4 ppm
• 8 to 10 ppm

  Hydrogen-rich water tablets should generate 8 to 10 ppm. Drink the water right after the tablet fully dissolves and turns cloudy, since hydrogen escapes quickly. Learn more.

• 15 to 20 ppm
• 25 to 30 ppm

11 What immune cells does butyrate help increase to maintain immune tolerance?

• Natural killer cells
• Dendritic cells
• Regulatory T cells (Tregs)

  Butyrate helps increase regulatory T cells (Tregs), especially in the gut. These cells help maintain immune tolerance and prevent excessive inflammatory responses. Learn more.

• Th17 cells

12 What’s the safest way to sanitize a toothbrush head?

• 3% Hydrogen peroxide

  A toothbrush head can be soaked in 3% hydrogen peroxide for 10 to 15 minutes, then air-dried. Boiling, using a dishwasher, or soaking in alcohol-based solutions may damage the bristles. Learn more.

• Boiling water
• Alcohol-based mouthwash
• 0.5% Phosphoric acid

13 What court ruled that Florida’s cell-cultivated meat ban does not conflict with federal poultry law?

• U.S. Supreme Court
• U.S. Court of Appeals for the Ninth Circuit
• U.S. District Court for the District of Columbia
• U.S. Court of Appeals for the Eleventh Circuit

  The U.S. Court of Appeals for the Eleventh Circuit ruled in March 2026 that federal poultry law did not override Florida’s ban on cell-cultivated meat. Learn more.

14 Which type of exercise is typically better for strength, performance, and muscle growth?

• Concentric exercise
• Eccentric exercise

  Eccentric exercise happens when muscles lengthen while resisting force. It is often better for building strength, improving performance, and supporting muscle enlargement. Learn more.

• Blood flow restriction (BFR) training
• Mitochondrial training

15 Which vibrant, reddish fruit is known for its antioxidant-rich seeds?

• Cranberry
• Pomegranate

  Pomegranate contains antioxidant compounds such as punicalagins, ellagic acid, and urolithins. These nutrients help support heart health, circulation, cellular protection, and healthy aging. Learn more.

• Blood orange
• Red grapefruit

16 What compound in black pepper helps the body absorb curcumin better?

• Capsaicin
• Limonene
• Piperine

  Piperine is the natural compound in black pepper that helps the body absorb and retain more curcumin. Learn more.

• Allicin

17 What food is not a significant source of vitamin K2?

• White rice

  Vitamin K2 is found in foods like natto, Gouda cheese, Brie, egg yolks, liver, but not in white rice. Learn more.

• Gouda cheese
• Egg yolks
• Natto

18 How much sun exposure, and when, is recommended for the most benefit?

• Ten minutes of sun exposure after sunset
• One hour of sun exposure around solar noon

  Sun exposure around solar noon provides stronger solar benefits. Time in peak sunlight should be increased gradually, especially after reducing seed oil intake. Learn more.

• Thirty minutes of sun exposure before sunrise
• Two hours of sun exposure at sunset

19 What is Akkermansia?

• A keystone gut bacterium linked to the microbiome

  Akkermansia is a gut bacterium studied for its role in the microbiome. It appears to interact with the mucin layer that helps support the gut lining. Learn more.

• A digestive enzyme that breaks down protein
• A vitamin made by stomach acid
• A fiber found in fermented foods

20 What hormone is released by your body when it’s deprived of glucose?

• Insulin
• Melatonin
• Estrogen
• Cortisol

  When glucose stays too low for too long, the body may release cortisol to help the liver produce glucose. Learn more.

21 Which dietary factor can make the skin more susceptible to ultraviolet (UV) damage?

• Low intake of colorful fruits that provide antioxidant compounds
• Not drinking enough mineral-rich water before spending time outdoors
• Excess linoleic acid (LA) from vegetable oils in the diet

  Excess linoleic acid (LA) from vegetable oils can build up in skin and oxidize under UV exposure. This may increase inflammation, DNA damage, and sunburn risk. Learn more.

• Eating too little protein to support normal skin repair