A large randomized controlled trial of vitamin D supplementation generates good data to show there is likely no benefit.
A large clinical trial shows vitamin D supplementation had no effect on COVID-19.
A new trial failed to find evidence that a massive dose of vitamin D improves outcomes in patients with moderate to severe COVID-19 infections.
Paul Offit's new book covers the evidence for many surgeries, medications, and screening tests that have been proven ineffective and harmful yet are still being used by doctors who refuse to follow the science.
A newly-published randomized controlled trial finds vitamin D supplementation has no effect on depression. This adds to the long list of medical conditions for which vitamin D supplementation has turned out to be ineffective.
A new study shows vitamin D supplements don't prevent diabetes. But there are still unanswered questions.
Vitamin D has been widely touted as beneficial for preventing cancer and cardiovascular disease. A large, well-conducted clinical trial now show that it has no effect.