Tuna is an important ocean-going food fish. Seen in the warm waters of the world, it is closely related to the beaks, pelicans, and horses, etc. It is usually the same as the scorpion family. Both within and between species have considerable variation and classification is very different. After the authority, this opinion is not consistent.
Tuna is nutritious
Because tuna must always swim fast to maintain the body's supply, plus it is only active in the depths of the sea, so the tender and delicious meat, and free from environmental pollution, is a rare healthy food for modern people. Protein content up to 20%, but the fat content is very low, commonly known as submarine chicken, high nutritional value. Most of the fatty acids in fish are unsaturated fatty acids, which contain a full set of amino acids, and all of the 8 amino acids the body needs. It also contains vitamins, abundant iron, potassium, calcium, iodine and other minerals and trace elements. Tuna is rich in unsaturated fatty acids DHA, docosahexaenoic acid and EPA eicosapentaenoic acid, which ranks first in various foods. DHA is called brain gold and is an essential nutrient for the development of the human brain and central nervous system. EPA, also known as OMEGA3, is a unique nutrient for tuna, which can inhibit cholesterol increase and prevent arteriosclerosis. It has a special role in the prevention and treatment of cardiovascular and cerebrovascular diseases.
Tuna is at the top of the food chain. The body's heavy metals and mercury are higher than other marine fish. Eating too much is equivalent to chronic suicide.