Two pasture-raised eggs from big farms can have as much omega-6 fat as a spoonful of canola oil, because those eggs sometimes contain a lot of a fat called linoleic acid.

If you feed laying hens oil rich in a fat called SDA, their eggs end up with way more of the good omega-3 fats—like EPA, DPA, and DHA—compared to feeding them another plant-based omega-3 oil. This happens because SDA skips a slow step in the hen’s body that usually holds back omega-3 production.

Feeding hens a special fat called gamma-linolenic acid (GLA) boosts certain healthy fats in their eggs more than another fat called linoleic acid (LA), and it might skip a slow step in the process — meaning more of the good stuff ends up in the yolk.