Asparagine - The amino acid increases insulin sensitivity which helps the body store energy 
in muscle instead of storing it as body fat.
Biotin - Boosts metabolism by improving glycemic control (stabilizes blood sugar) and lowering insulin, a hormone that promotes fat formation.
Carnitine - Carries fatty acids into the cell so they can be burned for fuel; Helps reduce visceral adiposity (belly fat).
Calcium - Inhibits the formation of fat cells; Also helps oxidize (burn) fat cells.
Lipoic Acid - Improves glucose uptake into cells, which helps a person burn carbohydrates more efficiently.
Chromium - Makes the body more sensitive to insulin, helping to reduce body fat and increase lean muscle.
Vitamin B5 - Taking B5 lowers body weight by activating lipoprotein lipases, an enzyme that burns fat cells. One study linked B5 supplementation to less hunger when dieting.
Magnesium - Low magnesium in cells impairs a person's ability to use glucose for fuel, instead of storing it as fat; Correcting a magnesium deficiency stimulates metabolism by increasing insulin sensitivity. Magnesium may also inhibit fat absorption.
Glutamine - Reduces fat mass by improving glucose uptake into muscle.
Cysteine - Supplementation with this antioxidant reduced body fat in obese patients.
Inositol - Supplementation may increase adiponectin levels.
Vitamin B3(Niacin) - Treatment with B3 increases adiponectin, a weight-loss hormone secreted by fat cells; Niacin-bound chromium supplements helped reduced body weight in clinical trials.
Vitamin A - Enhances expression of genes that reduce a person's tendency to store food as fat; Reduces the size of fat cells.
Vitamin E - Inhibits pre-fat cells from changing into mature fat cells, thus reducing body fat.
Vitamin D - Deficiency strongly linked to poor metabolism of carbohydrates; Genes that are regulated by vitamin D may alter the way fat cells form in some people.
Vitamin K - Poor vitamin K status linked to excess fat tissue; Vitamin K helps metabolize sugars.
Zinc - Deficiency of zinc reduces leptin, a beneficial hormone that regulates appetite, which is reversed by zinc repletion.