Scientists find one fat-burning amino acid that made mice lose 30% of their weight in a week; humans show promising metabolic effects

New research suggests an amino acid, cysteine, may help in weight loss. Yale scientists found that removing cysteine prompts fat burning. Calorie restriction benefits may stem from lowering cysteine. Mice lacking cysteine saw rapid weight loss. Human data hints at a similar link. Blocking cysteine requires caution due to its vital roles.