Rhonda Patrick· PhD
High-dose vitamin D supplementation (4,000 IU) improved visual memory but low-dose vitamin D (400 IU) did not.
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The headline is broadly defensible, but the qualifications matter. Effect sizes vary by population, the strongest claims rest on shorter trials, and credible voices push back on how it's typically framed.
High-dose vitamin D supplementation (4,000 IU) improved visual memory but low-dose vitamin D (400 IU) did not.
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So I think there is certainly a lot of evidence associative studies and also there's some randomized-control trials that really does point to the fact that vitamin D is regulating the aging process.
there's also evidence from randomized controlled trials that supplementing with vitamin D can actually improve cognitive function.