Chromium is an essential mineral your body needs in small amounts. When combined with picolinic acid, it is referred to as chromium picolinate and is sold as a nutritional supplement. It is used to prevent chromium defeciency, which may develop as a result of poor diet, stress and aging. Chromium picolinate helps in weight loss, increasing muscle and decreasing body fat. Chromium is also used to improve athletic performance and to increase enegy. Chromium picolinate works together with insulin produced by the pancreas to metabolize carbohydrates.