What Are the Signs of a Fast Metabolism?

Signs of an accelerated metabolism typically include rapid gastric emptying—especially after eating—leading to frequent hunger. Other symptoms may include tachycardia, heat intolerance, excessive sweating, hyperthyroidism, irritability, and unintentional weight loss. In more severe cases, patients may develop exophthalmos (protruding eyes) and accelerated skin turnover—all manifestations of heightened metabolic activity.