Sardines are the general designation of some herring, which is widely distributed in the temperate marine areas of the north-south latitude 6~20度, and is one of the most important economic fishes in the world.
Sardines are rich in phospholipids, which OMEGA-3 fatty acids, proteins and calcium. Phospholipid has a beneficial effect on fetal brain development. OMEGA-3 fatty acids have a protective effect on cardiovascular health. The special fatty acids can reduce the production of triglycerides and have a magical effect of decreasing blood pressure and slowing the speed of atherosclerosis, according to the website of the American Cardiovascular Association. Sardines also contain a lot of calcium, especially in fish bones. The fish bones in canned sardines are soft and safe to eat.