Simple lifestyle interventions are a tempting target to stave off cognitive decline and Alzheimer's disease. Sadly, two new studies appearing in JAMA show no discernible benefit from exercise activity nor from omega-3 or vitamin supplementation.
Snoring (sleep-disordered breathing, SDB) and cognitive decline linked in a new study. Does one cause the other? This study cannot tell us, and it s a stretch to figure out how that might work. Confounders, data-dredging also likely.