Omega-3s are essential in the technical sense: the body cannot manufacture EPA and DHA from scratch, and the plant form (ALA) converts to them at under 10% — you have to eat them. What they do once eaten is structural: they're building material for every cell membrane, concentrated hardest in the brain and retina. The heart story is where the honesty is required — spectacular in specific high-risk groups, modest in the general population. This guided journey covers the biology and the evidence, both without inflation.
3 quick steps~2 minutesEvidence-awareHealth info, not a diagnosis