These shellfish are an excellent source of the minerals iron and zinc, as well as vitamin B12. Iron functions primarily as a carrier of oxygen in the blood and muscles. Vitamin B12 assists in forming red blood cells and in building genetic material. It helps the nervous system to function and protein and fat to metabolize in the body. Vitamin B12 is found only in animal products.
Zinc helps form protein in the body.
It assists with wound healing, blood formation and general tissue growth and maintenance. Because zinc is a component of many enzymes, it is involved in most metabolic processes. Oysters are also a good source of the mineral phosphorus, providing 12 percent of the Daily Value. Phosphorus helps build strong bones and teeth. It is also involved in releasing energy from fat, protein and carbohydrates during metabolism, and in forming genetic material, cell membranes and many enzymes.