Omega-3 fatty acids are a component of food, without the efficacy of the role of drugs, but its own biological properties of the human body has a nutritional health effects. 1. Omega-3 fatty acids are one of the energy sources of metabolism: they can provide energy for the body. omega-3 fatty acids belong to a kind of unsaturated fatty acids, the decomposition process of fatty acids releases heat, which is an important part of the energy in the process of basic metabolism of the human body. 2. Promote the absorption of fat-soluble vitamins: fat-soluble vitamins include vitamin A, vitamin D, vitamin E and K. The absorption of these vitamins requires the help of fat, and omega-3 fatty acids have a biological role in this regard. 3. Promote the conversion of cholesterol in food: the main components of omega-3 fatty acids are eicosapentaenoic acid and docosahexaenoic acid, which can promote the conversion of cholesterol in the blood, contributing to normal lipid metabolism. Omega-3 fatty acids have other effects and roles, for example, they are essential nutrients for the development of the brain, retina, etc. Of course, omega-3 fatty acids are only a component of food, and can not be used as a substitute for medication to treat disease.