Researchers found that blood levels of seafood- and plant-based omega-3 fatty acids were associated with a lower risk of dying from heart attacks. The findings suggest that diets rich in omega-3 fatty acids may benefit heart health. Omega-3 fatty acids (omega-3s) are a group of molecules that have many important functions in the body. These include blood clotting, muscle activity, digestion, fertility, and brain development. There are several types of omega-3s, some of which must…