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Supplements30 mentions

Supplement vitamin D3 and adjust the dose to reach a blood level around 40–60 ng/mL, rather than taking a fixed one-size-fits-all amount. A common rule of thumb is that 1,000 IU raises serum vitamin D by about 5 ng/mL, so someone starting near 20 ng/mL may need roughly 4,000 IU daily to get into range. The goal is to correct low levels while avoiding underdosing, especially for people who get plenty of sun but still test low.

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The ones that we have the best evidence for are vitamin D, iron, omega-3 fatty acids, the B vitamins involved, and the B vitamins involved in methylation.

Andrew Huberman · Accelerate Learning & Increase Cognitive Capacity | Dr. Tommy Wood · Jul 20, 2026 · 1:05:32 · YouTube ↗
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