What Is Omega-3?
Omega-3 is a long-chain polyunsaturated fatty acid, and as science parses the roles of nutrients, it turns out that omega-3 fats do many good things for the body and the brain. Known as an "essential" fatty acid, meaning the body must take it in from food sources, omega-3 is important to human metabolism.
It exists in nature in three forms, one derived from land plants, two of them derived from marine sources, and in the body is highly concentrated in the brain; it is critical to the formation and maintenance of nerve cell membranes. Research shows that in the nervous system, omega-3s foster the processing of information, stabilize mood, and stave off cognitive declines. Low levels of omega-3s are linked to poor memory and depression. Omega-3 fats are also critical for the formation of anti-inflammatory compounds in the body.