EPA is an indispensable fatty acid that can participate in metabolism and is beneficial to the human body. EPA is an essential fatty acid for growth and development and can affect the development of the brain if lacking in EPA. EPA and DHA (docosahexaenoic acid) synergistic effect, conducive to normal eye development and the formation of vision; 2, smooth blood vessels: the formation of atherosclerosis and cholesterol and triglycerides, EPA can reduce cholesterol and triglycerides to a certain extent, regulate the content of different cholesterol in the body, thereby reducing the formation of blood clots in the walls of blood vessels, while promoting blood circulation, softening blood vessels, prevention of 3. Other: EPA can increase the therapeutic effect of autoimmune diseases such as rheumatoid arthritis, and EPA supplementation for extremely lean tumor patients can help maintain or increase body weight while increasing the sensitivity of chemotherapy. Children and adolescents are advised to obtain EPA from foods such as salmon, salmon, tuna, walnuts, pistachios, olive oil, etc. whenever possible. In case of significant EPA deficiency, medication preparations should be administered as prescribed by a physician, and those who are not deficient should avoid excessive EPA supplementation. for patients with liver disease, depression and diabetes, caution should be exercised in using EPA supplements or consuming foods with high EPA content; high dose intake of EPA may aggravate the condition.