Most supplement-for-brain claims collapse under a good trial — but the COSMOS program is the rare exception, finding a daily multivitamin modestly improved cognition in older adults. Here’s what the trials actually found, how big the effect really is, who it applies to, and the conflicting evidence that keeps it honest.
The Lancet Commission ranks hearing loss as the single largest modifiable risk factor for dementia — yet it’s almost never part of the brain-health conversation. Here’s what the evidence actually shows, whether hearing aids slow decline, why the link exists, and the simple, overlooked action worth taking.
Red light therapy for the brain has a rare combination: more legitimate science than most biohacks, and more overblown marketing than most biohacks. Here’s the honest picture — the real mitochondrial mechanism, the promising-but-early human evidence, and why the device you’d buy probably isn’t the one that was studied.
Low vitamin D is linked to worse cognition — but does supplementing help? The honest “signal vs hype” answer: correcting a genuine deficiency is worthwhile, yet supplement trials in already-replete people came up empty. Test first, correct if low, don’t megadose.
The brain runs on glucose, so blood sugar and mental clarity are genuinely linked — but the popular story is half myth. What the evidence really shows about low sugar, “sugar boosts,” the afternoon crash, and why chronic high blood sugar matters far more than any single spike.
Meditation is both genuinely useful and wildly oversold. An honest tour of what the neuroscience actually supports — modest, real benefits for stress and mood; reliable in-the-moment brain effects — and why the “eight weeks rebuilds your brain” claim fails its strongest test.
The exercise–BDNF link is the best-evidenced route to a healthier brain — built on human RCTs and meta-analyses, not rodent extrapolation. Here’s what the research really shows, honestly graded, including where it’s messier than the headlines.
The physiology behind intermittent fasting is real — but most of the brain benefits come from rodent studies, not human trials. A researcher’s honest look at what the evidence supports, what it doesn’t, and who should be cautious.
The gut-brain connection is real — and badly oversold. Here is the honest version: what is proven in humans, what is still confined to mice, and the handful of diet habits that actually move the needle.
Poor sleep is the most reliably documented impairment to cognitive performance available — and the most commonly ignored one. This guide covers the evidence-ranked sequence for tonight: environmental interventions first (largest, fastest, free), timing changes second, then supplementation — Magnesium Glycinate, Glycine, L-Theanine, and the pre-formulated Performance Lab Sleep option — all within the NeuroEdge 90-60-30 wind-down protocol.
