Omega-3 DHA

DHA is a structural component of neural cell membranes comprising 40 percent of polyunsaturated fatty acids in the brain. Low DHA levels are associated with faster cognitive decline and higher Alzheimer risk. A 2022 JAMA meta-analysis of 48 trials confirmed DHA supplementation slows age-related cognitive decline. Dose is at least 1000 to 2000mg DHA per day from algae-based or fish oil sources. The most important long-term brain insurance in this list.