Essential fatty acids (EFAs) are vital fats that the body cannot produce on its own, making them an important part of the diet. They include omega-3 and omega-6 fatty acids, which play critical roles in cell function and the formation of hormones. EFAs are important for brain health, cardiovascular function, and skin health. They support inflammatory response and aid in the absorption of fat-soluble vitamins. Consuming adequate EFAs through sources like fish, nuts, and seeds is crucial to maintaining optimal health and preventing chronic diseases.