Bold claim: More newborns are missing a life-saving vitamin K shot, and the trend could have deadly consequences. A study published in the Journal of the American Medical Association analyzes this shift and raises alarm about the potential health risks for infants.
Newborns naturally enter life with very low vitamin K levels, a nutrient essential for blood clotting. Without adequate stores, babies face a real danger of severe bleeding in early life, including in the brain or gastrointestinal tract. Since the 1960s, hospitals in the United States have routinely administered a vitamin K shot within the first six hours after birth to prevent these bleeds.
The study, led by Dr. Kristan Scott, a neonatologist at Children’s Hospital of Philadelphia, looked at growing numbers of families opting out of the shot in real-world practice. He and his team were surprised by the magnitude of the rise, even though they had anticipated an uptick. He noted, “The increase is not surprising, but the degree to which it did increase did catch me off guard.”
Using electronic medical records from Epic Systems’ Cosmos database, the researchers tracked more than 5 million births across 403 hospitals in all 50 states from 2017 to 2024. They found that roughly 4% of babies did not receive the vitamin K shot, equating to about 200,000 infants. The share rose from under 3% in 2017 to over 5% in 2024, with the highest rates among non-Hispanic white newborns. The growth began around 2019–2020 and accelerated during and after the COVID-19 pandemic.
According to Scott, there have been no major hospital policy changes or new medical guidelines that would explain the rise; the most plausible cause appears to be parental refusal.
Historical context shows this is not a new phenomenon. A 2016 study in Hospital Pediatrics explored reasons why some parents decline the shot. Contemporary commentary from experts like Dr. Tiffany McKee-Garrett of Texas Children’s Hospital links the trend to widespread social media misinformation and rising vaccine skepticism. She emphasizes that a vitamin K shot is not a vaccine but a single-dose supplement derived from plants, a distinction some parents misunderstand.
Other clinicians, such as Dr. Ivan Hand of NYC Health + Hospitals Kings County, note the broader climate of distrust in authorities that seems to have intensified in the late 2010s. In 2022, Hand co-authored an American Academy of Pediatrics policy statement addressing parental refusal of the vitamin K shot.
The public health implications are notable. The Centers for Disease Control and Prevention report that infants who miss the vitamin K shot are more than 80 times likelier to experience vitamin K deficiency bleeding, which can occur up to six months after birth. Bleeding can present in various ways—from bruising and bleeding at the umbilical stump to internal GI bleeding—and in the most serious instances, bleeding in the brain can resemble a stroke and be life-threatening.
Whether the decline in shot uptake translates into more documented cases of vitamin K deficiency bleeding remains unclear. Some clinicians, including Hand and Scott, anticipate that research will reveal a rising trend in bleeding events, although not all practitioners have yet observed this in their own clinics. CHOP reports both higher refusal rates and more instances of bleeding, reinforcing the concern that a preventable condition may be reemerging in some populations.
In contrast to injections, some countries use oral vitamin K supplementation for newborns. However, oral regimens can be inconsistent in absorption due to individual differences in digestion and breast milk’s modest contribution to vitamin K levels. Oral dosing also requires multiple administrations, whereas the shot provides a single, effective dose. Europe-based studies indicate oral vitamin K may reduce early deficiency bleeding but is less reliable for late-onset cases, which can occur up to six months later and carry significant mortality risks.
Experts warn that the success of vitamin K prophylaxis over the past six decades may have bred a false sense of security; as a result, families may underestimate the real danger of refusing the shot because severe outcomes have become less visible in modern clinical practice.
If this trend continues, more newborns could be exposed to preventable bleeding risks. The medical community emphasizes that vitamin K prophylaxis remains a simple, highly effective measure to protect infants in the first months of life.
Would you share your perspective on this issue? Do you think the messaging around vitamin K and its distinction from vaccines is clear enough for new parents, or could public health communications do more to address misconceptions and preserve this important safeguard for newborns?
