Eating more than about 1.1 grams of Omega-3s a day doesn't slow down aging any more than that amount already does — after that point, extra Omega-3s don't help.

We analyzed the available evidence and found that consuming more than about 1.1 grams of Omega-3s per day doesn’t appear to slow aging any further than that amount already does [1]. This suggests there may be a point beyond which extra Omega-3 intake doesn’t add additional benefit for aging-related processes. The evidence we’ve reviewed so far consistently points to this level — 1.1 grams daily — as a possible upper limit for this effect, with no studies showing greater benefits at higher intakes. We don’t know why this threshold might exist, but it could relate to how the body uses or stores Omega-3s, or how aging processes respond to changes in inflammation or cell function. At this point, we can’t say whether going above 1.1 grams is harmful, useless, or simply unnecessary for slowing aging — only that the current evidence doesn’t show extra gains. This doesn’t mean Omega-3s aren’t important — just that, based on what we’ve seen, more isn’t necessarily better when it comes to this specific outcome. The studies we’ve reviewed focus on aging, not other health effects like heart or brain health, so this threshold may not apply elsewhere. If you’re aiming to support healthy aging through Omega-3s, getting around 1.1 grams daily — from sources like fatty fish, flaxseeds, or supplements — seems to be the level where additional intake doesn’t seem to make a measurable difference in slowing aging.