Diets must include adequate nutrition and are most effective combined with exercise. Appetite suppressants may have dangerous side effects. Excessive weight loss may be a sign of anorexia nervosa.

• 节食除了要注意营养外,还必须有效的配合运动。抑制食欲可能会导致危险的后果。过度的节食可能是神经性厌食的症兆。