{"id":164038,"date":"2026-04-19T01:00:00","date_gmt":"2026-04-19T00:00:00","guid":{"rendered":"https:\/\/watchman.news\/2026\/04\/vitamin-k-for-newborns-what-the-current-science-says-and-why-my-position-has-changed\/"},"modified":"2026-04-19T05:52:45","modified_gmt":"2026-04-19T05:52:45","slug":"vitamin-k-for-newborns-what-the-current-science-says-and-why-my-position-has-changed","status":"publish","type":"post","link":"https:\/\/watchman.news\/de\/2026\/04\/vitamin-k-for-newborns-what-the-current-science-says-and-why-my-position-has-changed\/","title":{"rendered":"Vitamin K for Newborns: What the Current Science Says and Why My Position Has Changed"},"content":{"rendered":"

In 2010, I published an article on this site discussing vitamin K prophylaxis for newborns. That article reflected the state of a legitimate scientific debate that was active at the time, centered on a 1992 study by Golding et al. published in the BMJ that had reported a possible link between intramuscular vitamin K and childhood leukemia.1<\/span><\/sup><\/p>\n

Sixteen years later, I owe you an update, because the science has moved decisively and my position has changed with it. That is how evidence-based medicine is supposed to work. When the data changes, informed positions change too. Every reference in this article has been retrieved from PubMed and can be independently verified by PMID number.<\/p>\n

Why Newborns Are Vulnerable<\/h2>\n

Newborns arrive with very limited vitamin K reserves. The vitamin does not cross the placenta efficiently, breast milk contains only trace amounts of it, and the newborn gut lacks the bacterial population that eventually helps produce it.2<\/span>,<\/sup>3<\/span><\/sup><\/p>\n

This creates a window of vulnerability during the first six months of life when an infant’s ability to form blood clots is compromised.<\/p>\n

Vitamin K deficiency bleeding, or VKDB, is classified into three forms based on timing: early VKDB occurs within 24 hours of birth and is typically associated with maternal medications; classic VKDB occurs between days one through seven and is related to delayed feeding; and late VKDB occurs between two weeks and six months of age \u2014 the most dangerous form because it frequently presents as bleeding inside the brain.4<\/span>,<\/sup>5<\/span><\/sup><\/p>\n

Without any form of prophylaxis, late VKDB occurs in roughly 5 to 80 per 100,000 live births, depending on the population.6<\/span><\/sup> When it presents as intracranial hemorrhage, the mortality rate ranges from 20% to 50%, and survivors frequently suffer permanent neurological damage.7<\/span><\/sup><\/p>\n

How Effective Is the Vitamin K Shot?<\/h2>\n

The most comprehensive systematic review on this topic was published by Sankar et al. in the Journal of Perinatology in 2016. Pooling surveillance data from four countries, they found that a single intramuscular or subcutaneous dose of vitamin K at birth reduced the risk of late VKDB by approximately 98% \u2014 a pooled relative risk of 0.02 (95% CI, 0.00-0.10).8<\/span><\/sup><\/p>\n

The American Academy of Pediatrics reaffirmed its recommendation for universal intramuscular vitamin K at birth in a 2022 clinical report published in Pediatrics.9<\/span><\/sup> That recommendation has been consistent since 1961 \u2014 over six decades of clinical experience.<\/p>\n

A 2026 review by Mirone et al. in the International Journal of Molecular Sciences provided a detailed molecular analysis of how vitamin K prophylaxis works and confirmed that the intramuscular route provides near-complete protection against both classic and late VKDB.10<\/span><\/sup><\/p>\n

What About Oral Vitamin K?<\/h2>\n

Some parents prefer oral vitamin K because it avoids an injection. Several European countries, including Switzerland and the Netherlands, have used multi-dose oral protocols with partial success.<\/p>\n

However, the evidence consistently shows that oral prophylaxis is inferior to injection for preventing late VKDB. Sankar et al. found that a single oral dose dramatically increased the risk of late VKDB compared to injection (RR 24.5). Multiple oral doses performed better but still showed a nonsignificant trend toward higher risk (RR 3.64).11<\/span><\/sup><\/p>\n

A Dutch study by L\u00f6wensteyn et al. (2019) demonstrated that even increasing the oral vitamin K dose sixfold produced only a modest reduction in intracranial VKDB. The authors concluded that undetected cholestasis \u2014 a liver condition common in breastfed infants \u2014 prevents effective absorption of oral vitamin K, no matter how high the dose.12<\/span><\/sup><\/p>\n

A 2026 Swiss surveillance study confirmed this pattern. Over six years of monitoring 505,708 births, every VKDB case involved either parental vitamin K refusal, unrecognized cholestasis, or both.13<\/span><\/sup><\/p>\n

A 2025 review in Nutrition Reviews added prospective evidence that exclusively breastfed infants can develop vitamin K insufficiency even after receiving the shot at birth, supporting the case for continued supplementation during the first three months.14<\/span><\/sup><\/p>\n

The Cancer Concern Has Been Put to Rest<\/h2>\n

The most persistent fear about vitamin K stems from Golding et al.’s 1992 case-control study, which reported a nearly twofold increased risk of childhood cancer after intramuscular vitamin K (OR 1.97; 95% CI, 1.3-3.0).15<\/span><\/sup> This finding triggered a wave of research. Four major population-based studies investigated the question, and the results were unanimous \u2014 no association:<\/p>\n

\n

\u2022 <\/span>Ekelund et al. (1993)<\/strong> \u2014 1.38 million infants in Sweden. Cancer OR: 1.01. Leukemia OR: 0.90. No association.16<\/span><\/sup><\/p>\n

\u2022 <\/span>Klebanoff et al. (1993)<\/strong> \u2014 54,795 children, published in the New England Journal of Medicine. Cancer OR: 0.84. Leukemia OR: 0.47.17<\/span><\/sup><\/p>\n

\u2022 <\/span>von Kries et al. (1996)<\/strong> \u2014 Population-based study in Germany. Leukemia OR: 0.98. No association.18<\/span><\/sup><\/p>\n

\u2022 <\/span>Fear et al. (2003)<\/strong> \u2014 UK Childhood Cancer Study, 2,530 cancer cases, 4,487 controls. No association with any childhood cancer.19<\/span><\/sup><\/p>\n<\/div>\n

Brousson and Klein reviewed this evidence in 1996 in the Canadian Medical Association Journal and concluded there was no compelling reason to change the standard practice.20<\/span><\/sup> The 2026 Mirone et al. review confirmed this conclusion with three additional decades of data.21<\/span><\/sup> The cancer question is settled. It should no longer be a factor in any parent’s decision about vitamin K.<\/p>\n

The Troubling Rise in Refusal<\/h2>\n

Despite the clarity of the evidence, vitamin K refusal is increasing. A 2026 JAMA study by Scott et al. documented that the proportion of U.S. newborns not receiving vitamin K rose from 2.92% in 2017 to 5.18% in 2024 across more than five million births.22<\/span><\/sup><\/p>\n

An international survey published in Pediatric Blood & Cancer found that parental refusal of intramuscular injection is the most common barrier to prophylaxis in high-income countries.23<\/span><\/sup><\/p>\n

What happens when parents refuse? A 2026 case report in Child’s Nervous System described a two-month-old who arrived at the emergency room unresponsive with a blown pupil. CT scan revealed a massive brain hemorrhage. His INR \u2014 the measure of blood clotting \u2014 was greater than 15 (normal is around 1). He had not received vitamin K at birth. He required emergency surgery to remove part of his skull to relieve brain pressure.24<\/span><\/sup> He survived. Many do not.<\/p>\n

Shah, Brumberg and La Gamma published a review in 2020 examining the parallels between vitamin K refusal and vaccine hesitancy, noting that both are driven by misinformation on social media and geographic clustering.25<\/span><\/sup><\/p>\n

Where I Stand Now<\/h2>\n

Based on the totality of the published evidence, I support vitamin K prophylaxis for all newborns.<\/strong> The intramuscular route provides the most reliable protection. The cancer concern has been definitively resolved.<\/p>\n

I advise every parent to discuss vitamin K with their child’s pediatrician. If you are uncertain, the prudent choice is to give the shot. The risks of VKDB \u2014 brain hemorrhage, permanent damage, death \u2014 are real and well documented. The risks of the injection are negligible.<\/p>\n

My understanding of this topic has evolved as the evidence has grown. That is how science is supposed to work. When the data changes, informed positions change with it. The data is clear: vitamin K saves lives.<\/p>\n

A Note to Parents<\/h2>\n

If you are a parent researching this topic, I want to be direct with you. The internet contains a significant amount of misinformation about vitamin K. Some of it may reference my own 2010 article. That article reflected the state of a scientific debate that has since been resolved. The science moved forward, and so have I.<\/p>\n

Your pediatrician is your best resource for newborn care decisions. Vitamin K deficiency bleeding is rare, but when it occurs, the consequences can be devastating and irreversible. A single injection at birth can prevent it. Please talk to your doctor.<\/p>","protected":false},"excerpt":{"rendered":"

In 2010, I published an article on this site discussing vitamin K prophylaxis for newborns. That article reflected the state of a legitimate scientific debate that was active at the time, centered on a 1992 study by Golding et al. published in the BMJ that had reported a possible link between intramuscular vitamin K and childhood leukemia.1<\/p>\n

Sixteen years later, I owe you an update, because the science has moved decisively and my position has changed with it. That is how evidence-based medicine is supposed to work. When the data changes, informed positions change too. Every reference in this article has been retrieved from PubMed and can be independently verified by PMID number.<\/p>\n

Why Newborns Are Vulnerable<\/p>\n

Newborns arrive with very limited vitamin K reserves. The vitamin does not cross the placenta efficiently, breast milk contains only trace amounts of it, and the newborn gut lacks the bacterial population that eventually helps produce it.2,3<\/p>\n

This creates a window of vulnerability during the first six months of life when an infant’s ability to form blood clots is compromised.<\/p>\n

Vitamin K deficiency bleeding, or VKDB, is classified into three forms based on timing: early VKDB occurs within 24 hours of birth and is typically associated with maternal medications; classic VKDB occurs between days one through seven and is related to delayed feeding; and late VKDB occurs between two weeks and six months of age \u2014 the most dangerous form because it frequently presents as bleeding inside the brain.4,5<\/p>\n

Without any form of prophylaxis, late VKDB occurs in roughly 5 to 80 per 100,000 live births, depending on the population.6 When it presents as intracranial hemorrhage, the mortality rate ranges from 20% to 50%, and survivors frequently suffer permanent neurological damage.7<\/p>\n

How Effective Is the Vitamin K Shot?<\/p>\n

The most comprehensive systematic review on this topic was published by Sankar et al. in the Journal of Perinatology in 2016. Pooling surveillance data from four countries, they found that a single intramuscular or subcutaneous dose of vitamin K at birth reduced the risk of late VKDB by approximately 98% \u2014 a pooled relative risk of 0.02 (95% CI, 0.00-0.10).8<\/p>\n

The American Academy of Pediatrics reaffirmed its recommendation for universal intramuscular vitamin K at birth in a 2022 clinical report published in Pediatrics.9 That recommendation has been consistent since 1961 \u2014 over six decades of clinical experience.<\/p>\n

A 2026 review by Mirone et al. in the International Journal of Molecular Sciences provided a detailed molecular analysis of how vitamin K prophylaxis works and confirmed that the intramuscular route provides near-complete protection against both classic and late VKDB.10<\/p>\n

What About Oral Vitamin K?<\/p>\n

Some parents prefer oral vitamin K because it avoids an injection. Several European countries, including Switzerland and the Netherlands, have used multi-dose oral protocols with partial success.<\/p>\n

However, the evidence consistently shows that oral prophylaxis is inferior to injection for preventing late VKDB. Sankar et al. found that a single oral dose dramatically increased the risk of late VKDB compared to injection (RR 24.5). Multiple oral doses performed better but still showed a nonsignificant trend toward higher risk (RR 3.64).11<\/p>\n

A Dutch study by L\u00f6wensteyn et al. (2019) demonstrated that even increasing the oral vitamin K dose sixfold produced only a modest reduction in intracranial VKDB. The authors concluded that undetected cholestasis \u2014 a liver condition common in breastfed infants \u2014 prevents effective absorption of oral vitamin K, no matter how high the dose.12<\/p>\n

A 2026 Swiss surveillance study confirmed this pattern. Over six years of monitoring 505,708 births, every VKDB case involved either parental vitamin K refusal, unrecognized cholestasis, or both.13<\/p>\n

A 2025 review in Nutrition Reviews added prospective evidence that exclusively breastfed infants can develop vitamin K insufficiency even after receiving the shot at birth, supporting the case for continued supplementation during the first three months.14<\/p>\n

The Cancer Concern Has Been Put to Rest<\/p>\n

The most persistent fear about vitamin K stems from Golding et al.’s 1992 case-control study, which reported a nearly twofold increased risk of childhood cancer after intramuscular vitamin K (OR 1.97; 95% CI, 1.3-3.0).15 This finding triggered a wave of research. Four major population-based studies investigated the question, and the results were unanimous \u2014 no association:<\/p>\n

\u2022 Ekelund et al. (1993) \u2014 1.38 million infants in Sweden. Cancer OR: 1.01. Leukemia OR: 0.90. No association.16
\n \u2022 Klebanoff et al. (1993) \u2014 54,795 children, published in the New England Journal of Medicine. Cancer OR: 0.84. Leukemia OR: 0.47.17
\n \u2022 von Kries et al. (1996) \u2014 Population-based study in Germany. Leukemia OR: 0.98. No association.18
\n \u2022 Fear et al. (2003) \u2014 UK Childhood Cancer Study, 2,530 cancer cases, 4,487 controls. No association with any childhood cancer.19<\/p>\n

Brousson and Klein reviewed this evidence in 1996 in the Canadian Medical Association Journal and concluded there was no compelling reason to change the standard practice.20 The 2026 Mirone et al. review confirmed this conclusion with three additional decades of data.21 The cancer question is settled. It should no longer be a factor in any parent’s decision about vitamin K.<\/p>\n

The Troubling Rise in Refusal<\/p>\n

Despite the clarity of the evidence, vitamin K refusal is increasing. A 2026 JAMA study by Scott et al. documented that the proportion of U.S. newborns not receiving vitamin K rose from 2.92% in 2017 to 5.18% in 2024 across more than five million births.22<\/p>\n

An international survey published in Pediatric Blood & Cancer found that parental refusal of intramuscular injection is the most common barrier to prophylaxis in high-income countries.23<\/p>\n

What happens when parents refuse? A 2026 case report in Child’s Nervous System described a two-month-old who arrived at the emergency room unresponsive with a blown pupil. CT scan revealed a massive brain hemorrhage. His INR \u2014 the measure of blood clotting \u2014 was greater than 15 (normal is around 1). He had not received vitamin K at birth. He required emergency surgery to remove part of his skull to relieve brain pressure.24 He survived. Many do not.<\/p>\n

Shah, Brumberg and La Gamma published a review in 2020 examining the parallels between vitamin K refusal and vaccine hesitancy, noting that both are driven by misinformation on social media and geographic clustering.25<\/p>\n

Where I Stand Now<\/p>\n

Based on the totality of the published evidence, I support vitamin K prophylaxis for all newborns. The intramuscular route provides the most reliable protection. The cancer concern has been definitively resolved.<\/p>\n

I advise every parent to discuss vitamin K with their child’s pediatrician. If you are uncertain, the prudent choice is to give the shot. The risks of VKDB \u2014 brain hemorrhage, permanent damage, death \u2014 are real and well documented. The risks of the injection are negligible.<\/p>\n

My understanding of this topic has evolved as the evidence has grown. That is how science is supposed to work. When the data changes, informed positions change with it. The data is clear: vitamin K saves lives.<\/p>\n

A Note to Parents<\/p>\n

If you are a parent researching this topic, I want to be direct with you. The internet contains a significant amount of misinformation about vitamin K. Some of it may reference my own 2010 article. That article reflected the state of a scientific debate that has since been resolved. The science moved forward, and so have I.<\/p>\n

Your pediatrician is your best resource for newborn care decisions. Vitamin K deficiency bleeding is rare, but when it occurs, the consequences can be devastating and irreversible. A single injection at birth can prevent it. Please talk to your doctor.<\/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-164038","post","type-post","status-publish","format-standard","hentry","category-baptism-confirmation","category-dr-mercola-daily-news"],"yoast_head":"\nVitamin K for Newborns: What the Current Science Says and Why My Position Has Changed - 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\/04\/19\/vitamin-k-for-newborns.aspx\" \/>\n<meta property=\"og:locale\" content=\"de_DE\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Vitamin K for Newborns: What the Current Science Says and Why My Position Has Changed - Watchman News\" \/>\n<meta property=\"og:description\" content=\"In 2010, I published an article on this site discussing vitamin K prophylaxis for newborns. That article reflected the state of a legitimate scientific debate that was active at the time, centered on a 1992 study by Golding et al. published in the BMJ that had reported a possible link between intramuscular vitamin K and childhood leukemia.1 Sixteen years later, I owe you an update, because the science has moved decisively and my position has changed with it. That is how evidence-based medicine is supposed to work. When the data changes, informed positions change too. Every reference in this article has been retrieved from PubMed and can be independently verified by PMID number. Why Newborns Are Vulnerable Newborns arrive with very limited vitamin K reserves. The vitamin does not cross the placenta efficiently, breast milk contains only trace amounts of it, and the newborn gut lacks the bacterial population that eventually helps produce it.2,3 This creates a window of vulnerability during the first six months of life when an infant's ability to form blood clots is compromised. Vitamin K deficiency bleeding, or VKDB, is classified into three forms based on timing: early VKDB occurs within 24 hours of birth and is typically associated with maternal medications; classic VKDB occurs between days one through seven and is related to delayed feeding; and late VKDB occurs between two weeks and six months of age \u2014 the most dangerous form because it frequently presents as bleeding inside the brain.4,5 Without any form of prophylaxis, late VKDB occurs in roughly 5 to 80 per 100,000 live births, depending on the population.6 When it presents as intracranial hemorrhage, the mortality rate ranges from 20% to 50%, and survivors frequently suffer permanent neurological damage.7 How Effective Is the Vitamin K Shot? The most comprehensive systematic review on this topic was published by Sankar et al. in the Journal of Perinatology in 2016. Pooling surveillance data from four countries, they found that a single intramuscular or subcutaneous dose of vitamin K at birth reduced the risk of late VKDB by approximately 98% \u2014 a pooled relative risk of 0.02 (95% CI, 0.00-0.10).8 The American Academy of Pediatrics reaffirmed its recommendation for universal intramuscular vitamin K at birth in a 2022 clinical report published in Pediatrics.9 That recommendation has been consistent since 1961 \u2014 over six decades of clinical experience. A 2026 review by Mirone et al. in the International Journal of Molecular Sciences provided a detailed molecular analysis of how vitamin K prophylaxis works and confirmed that the intramuscular route provides near-complete protection against both classic and late VKDB.10 What About Oral Vitamin K? Some parents prefer oral vitamin K because it avoids an injection. Several European countries, including Switzerland and the Netherlands, have used multi-dose oral protocols with partial success. However, the evidence consistently shows that oral prophylaxis is inferior to injection for preventing late VKDB. Sankar et al. found that a single oral dose dramatically increased the risk of late VKDB compared to injection (RR 24.5). Multiple oral doses performed better but still showed a nonsignificant trend toward higher risk (RR 3.64).11 A Dutch study by L\u00f6wensteyn et al. (2019) demonstrated that even increasing the oral vitamin K dose sixfold produced only a modest reduction in intracranial VKDB. The authors concluded that undetected cholestasis \u2014 a liver condition common in breastfed infants \u2014 prevents effective absorption of oral vitamin K, no matter how high the dose.12 A 2026 Swiss surveillance study confirmed this pattern. Over six years of monitoring 505,708 births, every VKDB case involved either parental vitamin K refusal, unrecognized cholestasis, or both.13 A 2025 review in Nutrition Reviews added prospective evidence that exclusively breastfed infants can develop vitamin K insufficiency even after receiving the shot at birth, supporting the case for continued supplementation during the first three months.14 The Cancer Concern Has Been Put to Rest The most persistent fear about vitamin K stems from Golding et al.'s 1992 case-control study, which reported a nearly twofold increased risk of childhood cancer after intramuscular vitamin K (OR 1.97; 95% CI, 1.3-3.0).15 This finding triggered a wave of research. Four major population-based studies investigated the question, and the results were unanimous \u2014 no association: \u2022 Ekelund et al. (1993) \u2014 1.38 million infants in Sweden. Cancer OR: 1.01. Leukemia OR: 0.90. No association.16 \u2022 Klebanoff et al. (1993) \u2014 54,795 children, published in the New England Journal of Medicine. Cancer OR: 0.84. Leukemia OR: 0.47.17 \u2022 von Kries et al. (1996) \u2014 Population-based study in Germany. Leukemia OR: 0.98. No association.18 \u2022 Fear et al. (2003) \u2014 UK Childhood Cancer Study, 2,530 cancer cases, 4,487 controls. No association with any childhood cancer.19 Brousson and Klein reviewed this evidence in 1996 in the Canadian Medical Association Journal and concluded there was no compelling reason to change the standard practice.20 The 2026 Mirone et al. review confirmed this conclusion with three additional decades of data.21 The cancer question is settled. It should no longer be a factor in any parent's decision about vitamin K. The Troubling Rise in Refusal Despite the clarity of the evidence, vitamin K refusal is increasing. A 2026 JAMA study by Scott et al. documented that the proportion of U.S. newborns not receiving vitamin K rose from 2.92% in 2017 to 5.18% in 2024 across more than five million births.22 An international survey published in Pediatric Blood & Cancer found that parental refusal of intramuscular injection is the most common barrier to prophylaxis in high-income countries.23 What happens when parents refuse? A 2026 case report in Child's Nervous System described a two-month-old who arrived at the emergency room unresponsive with a blown pupil. CT scan revealed a massive brain hemorrhage. His INR \u2014 the measure of blood clotting \u2014 was greater than 15 (normal is around 1). He had not received vitamin K at birth. He required emergency surgery to remove part of his skull to relieve brain pressure.24 He survived. Many do not. Shah, Brumberg and La Gamma published a review in 2020 examining the parallels between vitamin K refusal and vaccine hesitancy, noting that both are driven by misinformation on social media and geographic clustering.25 Where I Stand Now Based on the totality of the published evidence, I support vitamin K prophylaxis for all newborns. The intramuscular route provides the most reliable protection. The cancer concern has been definitively resolved. I advise every parent to discuss vitamin K with their child's pediatrician. If you are uncertain, the prudent choice is to give the shot. The risks of VKDB \u2014 brain hemorrhage, permanent damage, death \u2014 are real and well documented. The risks of the injection are negligible. My understanding of this topic has evolved as the evidence has grown. That is how science is supposed to work. When the data changes, informed positions change with it. The data is clear: vitamin K saves lives. A Note to Parents If you are a parent researching this topic, I want to be direct with you. The internet contains a significant amount of misinformation about vitamin K. Some of it may reference my own 2010 article. That article reflected the state of a scientific debate that has since been resolved. The science moved forward, and so have I. Your pediatrician is your best resource for newborn care decisions. Vitamin K deficiency bleeding is rare, but when it occurs, the consequences can be devastating and irreversible. A single injection at birth can prevent it. Please talk to your doctor.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/articles.mercola.com\/sites\/articles\/archive\/2026\/04\/19\/vitamin-k-for-newborns.aspx\" \/>\n<meta property=\"og:site_name\" content=\"Watchman News\" \/>\n<meta property=\"article:published_time\" content=\"2026-04-19T00:00:00+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2026-04-19T05:52:45+00:00\" \/>\n<meta name=\"author\" content=\"Admin\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Verfasst von\" \/>\n\t<meta name=\"twitter:data1\" content=\"Admin\" \/>\n\t<meta name=\"twitter:label2\" content=\"Gesch\u00e4tzte Lesezeit\" \/>\n\t<meta name=\"twitter:data2\" content=\"6\u00a0Minuten\" \/>\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\/04\/19\/vitamin-k-for-newborns.aspx#article\",\"isPartOf\":{\"@id\":\"https:\/\/watchman.news\/2026\/04\/vitamin-k-for-newborns-what-the-current-science-says-and-why-my-position-has-changed\/\"},\"author\":{\"name\":\"Admin\",\"@id\":\"https:\/\/watchman.news\/#\/schema\/person\/3f4506c6002f5893ba45478a4540739f\"},\"headline\":\"Vitamin K for Newborns: What the Current Science Says and Why My Position Has Changed\",\"datePublished\":\"2026-04-19T00:00:00+00:00\",\"dateModified\":\"2026-04-19T05:52:45+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/watchman.news\/2026\/04\/vitamin-k-for-newborns-what-the-current-science-says-and-why-my-position-has-changed\/\"},\"wordCount\":1199,\"commentCount\":0,\"articleSection\":[\"Baptism & Confirmation\",\"Dr Mercola Daily News\"],\"inLanguage\":\"de\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\/\/articles.mercola.com\/sites\/articles\/archive\/2026\/04\/19\/vitamin-k-for-newborns.aspx#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/watchman.news\/2026\/04\/vitamin-k-for-newborns-what-the-current-science-says-and-why-my-position-has-changed\/\",\"url\":\"https:\/\/articles.mercola.com\/sites\/articles\/archive\/2026\/04\/19\/vitamin-k-for-newborns.aspx\",\"name\":\"Vitamin K for Newborns: What the Current Science Says and Why My Position Has Changed - 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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\/04\/19\/vitamin-k-for-newborns.aspx","og_locale":"de_DE","og_type":"article","og_title":"Vitamin K for Newborns: What the Current Science Says and Why My Position Has Changed - Watchman News","og_description":"In 2010, I published an article on this site discussing vitamin K prophylaxis for newborns. That article reflected the state of a legitimate scientific debate that was active at the time, centered on a 1992 study by Golding et al. published in the BMJ that had reported a possible link between intramuscular vitamin K and childhood leukemia.1 Sixteen years later, I owe you an update, because the science has moved decisively and my position has changed with it. That is how evidence-based medicine is supposed to work. When the data changes, informed positions change too. Every reference in this article has been retrieved from PubMed and can be independently verified by PMID number. Why Newborns Are Vulnerable Newborns arrive with very limited vitamin K reserves. The vitamin does not cross the placenta efficiently, breast milk contains only trace amounts of it, and the newborn gut lacks the bacterial population that eventually helps produce it.2,3 This creates a window of vulnerability during the first six months of life when an infant's ability to form blood clots is compromised. Vitamin K deficiency bleeding, or VKDB, is classified into three forms based on timing: early VKDB occurs within 24 hours of birth and is typically associated with maternal medications; classic VKDB occurs between days one through seven and is related to delayed feeding; and late VKDB occurs between two weeks and six months of age \u2014 the most dangerous form because it frequently presents as bleeding inside the brain.4,5 Without any form of prophylaxis, late VKDB occurs in roughly 5 to 80 per 100,000 live births, depending on the population.6 When it presents as intracranial hemorrhage, the mortality rate ranges from 20% to 50%, and survivors frequently suffer permanent neurological damage.7 How Effective Is the Vitamin K Shot? The most comprehensive systematic review on this topic was published by Sankar et al. in the Journal of Perinatology in 2016. Pooling surveillance data from four countries, they found that a single intramuscular or subcutaneous dose of vitamin K at birth reduced the risk of late VKDB by approximately 98% \u2014 a pooled relative risk of 0.02 (95% CI, 0.00-0.10).8 The American Academy of Pediatrics reaffirmed its recommendation for universal intramuscular vitamin K at birth in a 2022 clinical report published in Pediatrics.9 That recommendation has been consistent since 1961 \u2014 over six decades of clinical experience. A 2026 review by Mirone et al. in the International Journal of Molecular Sciences provided a detailed molecular analysis of how vitamin K prophylaxis works and confirmed that the intramuscular route provides near-complete protection against both classic and late VKDB.10 What About Oral Vitamin K? Some parents prefer oral vitamin K because it avoids an injection. Several European countries, including Switzerland and the Netherlands, have used multi-dose oral protocols with partial success. However, the evidence consistently shows that oral prophylaxis is inferior to injection for preventing late VKDB. Sankar et al. found that a single oral dose dramatically increased the risk of late VKDB compared to injection (RR 24.5). Multiple oral doses performed better but still showed a nonsignificant trend toward higher risk (RR 3.64).11 A Dutch study by L\u00f6wensteyn et al. (2019) demonstrated that even increasing the oral vitamin K dose sixfold produced only a modest reduction in intracranial VKDB. The authors concluded that undetected cholestasis \u2014 a liver condition common in breastfed infants \u2014 prevents effective absorption of oral vitamin K, no matter how high the dose.12 A 2026 Swiss surveillance study confirmed this pattern. Over six years of monitoring 505,708 births, every VKDB case involved either parental vitamin K refusal, unrecognized cholestasis, or both.13 A 2025 review in Nutrition Reviews added prospective evidence that exclusively breastfed infants can develop vitamin K insufficiency even after receiving the shot at birth, supporting the case for continued supplementation during the first three months.14 The Cancer Concern Has Been Put to Rest The most persistent fear about vitamin K stems from Golding et al.'s 1992 case-control study, which reported a nearly twofold increased risk of childhood cancer after intramuscular vitamin K (OR 1.97; 95% CI, 1.3-3.0).15 This finding triggered a wave of research. Four major population-based studies investigated the question, and the results were unanimous \u2014 no association: \u2022 Ekelund et al. (1993) \u2014 1.38 million infants in Sweden. Cancer OR: 1.01. Leukemia OR: 0.90. No association.16 \u2022 Klebanoff et al. (1993) \u2014 54,795 children, published in the New England Journal of Medicine. Cancer OR: 0.84. Leukemia OR: 0.47.17 \u2022 von Kries et al. (1996) \u2014 Population-based study in Germany. Leukemia OR: 0.98. No association.18 \u2022 Fear et al. (2003) \u2014 UK Childhood Cancer Study, 2,530 cancer cases, 4,487 controls. No association with any childhood cancer.19 Brousson and Klein reviewed this evidence in 1996 in the Canadian Medical Association Journal and concluded there was no compelling reason to change the standard practice.20 The 2026 Mirone et al. review confirmed this conclusion with three additional decades of data.21 The cancer question is settled. It should no longer be a factor in any parent's decision about vitamin K. The Troubling Rise in Refusal Despite the clarity of the evidence, vitamin K refusal is increasing. A 2026 JAMA study by Scott et al. documented that the proportion of U.S. newborns not receiving vitamin K rose from 2.92% in 2017 to 5.18% in 2024 across more than five million births.22 An international survey published in Pediatric Blood & Cancer found that parental refusal of intramuscular injection is the most common barrier to prophylaxis in high-income countries.23 What happens when parents refuse? A 2026 case report in Child's Nervous System described a two-month-old who arrived at the emergency room unresponsive with a blown pupil. CT scan revealed a massive brain hemorrhage. His INR \u2014 the measure of blood clotting \u2014 was greater than 15 (normal is around 1). He had not received vitamin K at birth. He required emergency surgery to remove part of his skull to relieve brain pressure.24 He survived. Many do not. Shah, Brumberg and La Gamma published a review in 2020 examining the parallels between vitamin K refusal and vaccine hesitancy, noting that both are driven by misinformation on social media and geographic clustering.25 Where I Stand Now Based on the totality of the published evidence, I support vitamin K prophylaxis for all newborns. The intramuscular route provides the most reliable protection. The cancer concern has been definitively resolved. I advise every parent to discuss vitamin K with their child's pediatrician. If you are uncertain, the prudent choice is to give the shot. The risks of VKDB \u2014 brain hemorrhage, permanent damage, death \u2014 are real and well documented. The risks of the injection are negligible. My understanding of this topic has evolved as the evidence has grown. That is how science is supposed to work. When the data changes, informed positions change with it. The data is clear: vitamin K saves lives. A Note to Parents If you are a parent researching this topic, I want to be direct with you. The internet contains a significant amount of misinformation about vitamin K. Some of it may reference my own 2010 article. That article reflected the state of a scientific debate that has since been resolved. The science moved forward, and so have I. Your pediatrician is your best resource for newborn care decisions. Vitamin K deficiency bleeding is rare, but when it occurs, the consequences can be devastating and irreversible. A single injection at birth can prevent it. Please talk to your doctor.","og_url":"https:\/\/articles.mercola.com\/sites\/articles\/archive\/2026\/04\/19\/vitamin-k-for-newborns.aspx","og_site_name":"Watchman News","article_published_time":"2026-04-19T00:00:00+00:00","article_modified_time":"2026-04-19T05:52:45+00:00","author":"Admin","twitter_card":"summary_large_image","twitter_misc":{"Verfasst von":"Admin","Gesch\u00e4tzte Lesezeit":"6\u00a0Minuten"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/articles.mercola.com\/sites\/articles\/archive\/2026\/04\/19\/vitamin-k-for-newborns.aspx#article","isPartOf":{"@id":"https:\/\/watchman.news\/2026\/04\/vitamin-k-for-newborns-what-the-current-science-says-and-why-my-position-has-changed\/"},"author":{"name":"Admin","@id":"https:\/\/watchman.news\/#\/schema\/person\/3f4506c6002f5893ba45478a4540739f"},"headline":"Vitamin K for Newborns: What the Current Science Says and Why My Position Has Changed","datePublished":"2026-04-19T00:00:00+00:00","dateModified":"2026-04-19T05:52:45+00:00","mainEntityOfPage":{"@id":"https:\/\/watchman.news\/2026\/04\/vitamin-k-for-newborns-what-the-current-science-says-and-why-my-position-has-changed\/"},"wordCount":1199,"commentCount":0,"articleSection":["Baptism & Confirmation","Dr Mercola Daily News"],"inLanguage":"de","potentialAction":[{"@type":"CommentAction","name":"Comment","target":["https:\/\/articles.mercola.com\/sites\/articles\/archive\/2026\/04\/19\/vitamin-k-for-newborns.aspx#respond"]}]},{"@type":"WebPage","@id":"https:\/\/watchman.news\/2026\/04\/vitamin-k-for-newborns-what-the-current-science-says-and-why-my-position-has-changed\/","url":"https:\/\/articles.mercola.com\/sites\/articles\/archive\/2026\/04\/19\/vitamin-k-for-newborns.aspx","name":"Vitamin K for Newborns: What the Current Science Says and Why My Position Has Changed - Watchman News","isPartOf":{"@id":"https:\/\/watchman.news\/#website"},"datePublished":"2026-04-19T00:00:00+00:00","dateModified":"2026-04-19T05:52:45+00:00","author":{"@id":"https:\/\/watchman.news\/#\/schema\/person\/3f4506c6002f5893ba45478a4540739f"},"breadcrumb":{"@id":"https:\/\/articles.mercola.com\/sites\/articles\/archive\/2026\/04\/19\/vitamin-k-for-newborns.aspx#breadcrumb"},"inLanguage":"de","potentialAction":[{"@type":"ReadAction","target":["https:\/\/articles.mercola.com\/sites\/articles\/archive\/2026\/04\/19\/vitamin-k-for-newborns.aspx"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/articles.mercola.com\/sites\/articles\/archive\/2026\/04\/19\/vitamin-k-for-newborns.aspx#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/watchman.news\/"},{"@type":"ListItem","position":2,"name":"Vitamin K for Newborns: What the Current Science Says and Why My Position Has Changed"}]},{"@type":"WebSite","@id":"https:\/\/watchman.news\/#website","url":"https:\/\/watchman.news\/","name":"Watchman News","description":"News of Importance for the True Christian Israel","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/watchman.news\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"de"},{"@type":"Person","@id":"https:\/\/watchman.news\/#\/schema\/person\/3f4506c6002f5893ba45478a4540739f","name":"Administrator","image":{"@type":"ImageObject","inLanguage":"de","@id":"https:\/\/secure.gravatar.com\/avatar\/a4dc65c7d54b24b8fa9d6d4116fd21209e86efe3563858469b00d8bddd033356?s=96&d=mm&r=g","url":"https:\/\/secure.gravatar.com\/avatar\/a4dc65c7d54b24b8fa9d6d4116fd21209e86efe3563858469b00d8bddd033356?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/a4dc65c7d54b24b8fa9d6d4116fd21209e86efe3563858469b00d8bddd033356?s=96&d=mm&r=g","caption":"Admin"},"url":"https:\/\/watchman.news\/de\/author\/admin\/"}]}},"_links":{"self":[{"href":"https:\/\/watchman.news\/de\/wp-json\/wp\/v2\/posts\/164038","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/watchman.news\/de\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/watchman.news\/de\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/watchman.news\/de\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/watchman.news\/de\/wp-json\/wp\/v2\/comments?post=164038"}],"version-history":[{"count":0,"href":"https:\/\/watchman.news\/de\/wp-json\/wp\/v2\/posts\/164038\/revisions"}],"wp:attachment":[{"href":"https:\/\/watchman.news\/de\/wp-json\/wp\/v2\/media?parent=164038"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/watchman.news\/de\/wp-json\/wp\/v2\/categories?post=164038"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/watchman.news\/de\/wp-json\/wp\/v2\/tags?post=164038"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}