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, potassium, and iron round out the top 3 minerals that sardines provide in addition to the omega-3s and Vitamin D. Tips for eating more: Sardines can be a tricky food to eat more of, since they have a strong flavor and small size. You can try adding them to a seafood chowder, or on a pizza.