Omega-6 fatty acids are essential fatty acids. They are necessary for human health, but the body cannot make them. Most omega-6 fatty acids come from vegetable oils, such as linoleic acid (LA). Linoleic acid is converted to gamma-linolenic acid (GLA) in the body. It can then break down further to arachidonic acid (AA). Omega-6 fatty acids play a crucial role in brain function, and normal growth and development. Omega-6s help stimulate skin and hair growth, maintain bone health, regulate metabolism, and maintain the reproductive system.