Chromium is an essential trace mineral needed in small amounts. It plays a role in insulin function and glucose metabolism. Chromium deficiency can result in diabetes. It is found naturally in some foods like brewer's yeast, eggs, molasses, and onions. Recommended daily intakes vary from 11-45 micrograms depending on age. While chromium supplements are generally safe when taken as directed, very high uncontrolled doses from supplements could potentially cause side effects like skin irritation or rapid heartbeat. Maintaining adequate chromium levels through a balanced diet is recommended for overall health.