Dr. Joseph Mercola Reverses Long-Held Opposition to Vitamin K Shots for Newborns
Dr. Joseph Mercola, a prominent alternative medicine figure who spent over a decade warning parents against newborn vitamin K shots, has publicly reversed his position, now stating 'the data is clear: vitamin K saves lives.' His reversal came days after ProPublica contacted him while preparing a report on infant deaths linked to parents refusing the shot. The shift is significant because Mercola's earlier writings have been widely cited by parents who declined the shot, contributing to an alarming rise in vitamin K deficiency bleeding cases in newborns.
Dr. Joseph Mercola, an osteopathic physician with 1.7 million Facebook followers and a prominent voice in alternative medicine and vaccine skepticism, has reversed his longstanding opposition to the newborn vitamin K shot, publishing an article on his website stating he now supports vitamin K prophylaxis for all newborns. His earlier claims — that the shot was unnecessary, contained toxic preservatives, and delivered excessive doses — have been widely debunked by medical authorities, and the science supporting the shot has been settled for decades, with the discovery of vitamin K's role in blood clotting earning a Nobel Prize in 1943. A study analyzing over 5 million health records found that 5.2% of newborns — nearly 200,000 — did not receive the shot between 2017 and 2024, representing a 77% increase in refusals over that period; babies who skip the shot are 81 times more likely to develop vitamin K deficiency bleeding, which can cause fatal brain and gut hemorrhages. Mercola acknowledged in his reversal that his 2010 article may have contributed to online misinformation, though ProPublica notes the underlying science had not meaningfully changed since then. HHS Secretary Robert F. Kennedy Jr., a close ally of Mercola and a leading vaccine skeptic, has declined to publicly endorse the shot despite official CDC recommendations, and an HHS spokesperson attributed declining uptake partly to eroded trust during the COVID-19 pandemic. Other figures in the anti-vaccine community, including Dr. Suzanne Humphries and Children's Health Defense, continue to raise doubts about the shot. A screenshot of Mercola's updated website article confirms his new position endorsing intramuscular vitamin K injection for all newborns and directing parents to consult their pediatricians.
What's missing
Neither source details the specific nature of ProPublica's outreach or Mercola's internal deliberation, leaving unresolved whether his reversal — published just two days after ProPublica contacted him — reflects genuine scientific reconsideration or primarily a response to anticipated negative press coverage.
How coverage differed
ProPublica frames Mercola's reversal critically, emphasizing that the science was never actually in dispute and that his earlier writings caused measurable harm, while the New York Post presents the reversal more straightforwardly as a notable about-face without as sharply scrutinizing the gap between Mercola's claimed reason for changing his mind and the actual state of the science.
What different sources said
- New York PostRight
Popular anti-vax doctor does 180 on a newborn injection for ‘devastating’ fatal condition
- ProPublicaLeft
A Popular Doctor Had Long Warned That Vitamin K Shots Are Risky for Newborns. Now He’s Changed His Tune.
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