Dr. Rhonda Patrick on health: what the evidence says · JRE #1474
SUBJECT: HEALTH
Not a true/false call. Every claim is logged with its sources; read the exhibits below.
the people had like an 8% or were eightfold, eight times less likely to have a severe form of COVID-19. And if they had, and they were 20 times less likely to have critical, like critical form of COVID-19. So that was the Philippines.
What the evidence says 01 / RECORD
Patrick's figures trace to a small retrospective observational study of COVID-19 patients in the Philippines by Mark Alipio, which circulated only as an unreviewed preprint and was never published in a peer-reviewed journal; independent tracking of the vitamin D/COVID-19 preprint literature indicates it was later withdrawn from its preprint server. The study used a small, non-randomized, retrospective design with self-reported and inconsistently measured vitamin D status, making it vulnerable to confounding (for example, by age, comorbidities, and baseline health) rather than establishing that vitamin D caused the difference in outcomes. Subsequent randomized controlled trials designed to test whether vitamin D supplementation improves COVID-19 outcomes have not reproduced effects of this magnitude. A 2022 Cochrane systematic review of RCTs concluded the evidence on vitamin D as a COVID-19 treatment is highly uncertain, finding no clear benefit for mortality, ICU admission, or need for ventilation. The specific 8-fold and 20-fold risk reductions Patrick cites come from a weak, unreplicated, non-peer-reviewed observational source and are not supported by controlled trial evidence.