Vitamin D: what the biggest YouTube health voices say

Dr. Eric Berg’s take: Recommends high-dose vitamin D3 alongside K2 and magnesium for osteoporosis-related bone rebuilding, combined with weight training.

Huberman Lab’s take: Says most people are probably deficient and benefit, but supplementing makes little sense unless a deficiency exists.

Thomas DeLauer’s take: Warns that standalone synthetic vitamin D3 may deplete or compete with vitamin A; prefers sun and cod liver oil for getting D.

FoundMyFitness’s take: Frames vitamin D as useful for correcting a deficiency, but says it will not slow aging in people already sufficient.

Dr. Anna Cabeca’s take: Favours getting vitamin D from sensible sun exposure over pills, saying supplements cannot replace sunlight and nature's wider benefits.