Iron

Capers are a modest plant source of iron, an essential mineral. Iron aids in oxygen transport it ensures that your red blood cells can carry enough oxygen to nourish tissues throughout your body. Getting enough iron also helps your cells make energy to support your day to day functions, and iron aids in cell growth and development. A tablespoon of capers contains 0.14 milligrams of iron, 2 percent of the daily iron requirements for men or 1 percent for women, according to the Office of Dietary Supplements.