Copper is an essential mineral required for metabolic processes and proper functioning of the system. It is a good source of energy and prevents premature aging. Researchers have also revealed that it can play a significant role in fat metabolism and weight loss. Copper enables the body the system to break down fat cells and produce energy. Hence, the more copper you consume, the more fat is broken down. Copper rich foods include leafy greens, nuts, beans, seeds, mushrooms, oysters and other shellfish.