Omega-3 fats—chiefly DHA (docosahexaenoic acid) and EPA (eicosapentaenoic acid)—are the brain’s premium building blocks, making up nearly 40% of neuronal membranes and keeping them fluid so signals shoot across synapses with ease. DHA shapes gray-matter architecture, while EPA fine-tunes neuro-inflammation and blood flow. The body makes only trace amounts, so levels slide 1–2% per year after age 40, mirroring dips in memory and mood. Modern diets leave most people at half the tissue levels linked to healthy cognition, turning supplementation or regular fatty-fish meals into a metabolic “oil change” for neurons and arteries alike.
Effectiveness4/5
Evidence4/5
Safety4/5
