Obesity and weight cycling.

Over 30 million Americans are overweight and in a battle to "slim down." Unfortunately for some, pounds that are lost are soon regained, leading to repeated bouts of "weight cycling." This pattern can have deleterious effects on both the physical and mental health of the individual. One must understand the causes of weight cycling to help guide the patient towards a more sensible and successful lifestyle. Emphasis on exercise, diet, and maintenance of weight loss is vital.