Vitamin D serves as a major regulator of immune function. Meta-analyses of randomized controlled trials show that daily or weekly vitamin D supplementation — but not large bolus doses — protects against acute respiratory tract infections. In the context of COVID-19, the authors of a recent double-blind, placebo-controlled trial concluded that hospitalized COVID-19 patients administered a single large vitamin D3 dose did not have statistically better clinical outcomes, as measured by hospital length of stay, than those given a placebo. The authors acknowledge several limitations to their study, including a patient population with several comorbidities, multiple medications, and lacking vitamin D deficiency. Moreover, the sample size may be too small to detect modest, yet clinically meaningful differences between the vitamin D3 and placebo groups. In this clip, Dr. Roger Seheult and Dr. Rhonda Patrick describe emerging findings of vitamin D intervention trials and discuss the value of meticulous study design.
This clip was taken from the FoundMyFitness interview with Roger Seheult found at
Original episode published on March 3, 2021
🤯 #COVID19 #immunity #vitaminD #sleep 🦠
