Chromium is at the heart of a biologically active complex called Glucose Tolerance Factor or ""GTF"", which is responsible for potentiating (increasing) the action of insulin in the body. Insulin is a vital hormone responsible for transporting glucose inside cells and maintaining proper blood sugar and blood lipid (cholesterol) levels in the body. Chromium helps insulin metabolize fat, turn protein into muscle and convert sugar into energy. In fact, chromium-activated insulin increases the amount of blood sugar available for energy production nearly twenty-fold.