Gamma-linolenic acid (GLA) is an omega-6 fatty acid found in various plant oils, such as evening primrose oil, borage oil, and black currant seed oil. It plays a crucial role in the body by contributing to the production of prostaglandins, which are hormone-like substances that help regulate inflammation and other bodily functions. GLA is often used as a dietary supplement for its potential health benefits, including support for skin health, relief from premenstrual syndrome (PMS), and management of conditions like eczema and rheumatoid arthritis. However, more research is needed to fully understand its effects and optimal dosages.