Omega fatty acids or essential fatty acids omega-3 , omega-6 and omega-9 are fatty acids that the human body needs to maintain good health but cannot produce. Therefore, these omega fatty acids must be obtained from food and nutritional supplements . The health benefits of essential fatty acids Omega-3 and Omega-6 cover a very wide spectrum - they are good for brain function and the nervous system , for heart health , for blood pressure , for joints and bones , for the digestive system . Therefore, they fully justify their name "essential" (vitally important). The richest sources of omega fatty acids are fish oil and flaxseed oil . Of course, Omega 3 and Omega 6 are also found in smaller amounts in some fruits such as Acai Berry , African Mango , Avocado, as well as Chia Seeds .