Chromium is a so called, trace mineral, meaning humans require small amounts of this nutrient. Your body uses chromium to regulate blood sugar. Good food sources of chromium include broccoli, grape juice, English muffins, potatoes, and garlic. You may excrete more chromium in your urine if you are sick, stressed, or are a woman who is pregnant or lactating. Strenuous exercise can deplete chromium stores, too. Eating a diet that is high in simple sugars, the kind your body breaks down easily, encourages the loss of chromium. Chromium supplements are touted as weight loss aids but there is no scientific evidence that supports these claims.