Contents. 1  Inflammatory joint effusion AND Stiff hip: Causes of All Symptoms. 2  Inflammatory joint effusion OR Stiff hip: Causes of Any Symptom. 3  Inflammatory joint effusion: Causes. 4  Inflammatory joint effusion: Introduction. 5  Stiff hip: Causes. 6  Stiff hip: Introduction.
Sardines are an important part of the food chain. Jupiterimages/Photos.com/Getty Images. Sardines live in large schools that may contain thousands of fish. They typically feed on plankton and are close to the bottom of the food chain; many different kinds of predators eat sardines, including humans.
Calcium and Selenium. Canned sardines, when eaten with the bones, are a concentrated source of calcium. Calcium is essential for healthy bones and an inadequate intake causes rickets in children and osteoporosis and osteomalacia in adults.ew foods provide vitamin D, and canned sardines are one of them. This vitamin is synthesized in the skin during exposure to sunlight; however, people living in areas away from the equator or who do not expose themselves frequently to the sun, may become deficient in this vitamin.