Do Multivitamins Help Your Brain? What the COSMOS Trials Show
A daily multivitamin modestly slowed cognitive decline in older adults in the COSMOS trials. How big the effect is, who it applies to, and safety.
Vitamin D and Cognitive Function: Signal vs Hype
Low vitamin D is linked to poorer cognition, but trials in people who weren’t deficient found no benefit. The evidence, testing and safe intake.
Magnesium Glycinate for Sleep: What the Evidence Shows
Magnesium glycinate gives a small, gentle sleep benefit at best. What the trials found, how to read the label, dosing and cautions.
