Obesity can be cured. For most people following a healthy eating regime that provides their body with slightly fewer calories than it needs leads to gradual weight loss. Usually, eating between1000 to 1200 calories a day and exercising invariably leads to weight loss that takes you out of the obesity zone. If the underlying cause is a medical condition or drug, a total cure may not be possible. However, with help, the weight gain can be slowed, sometimes reversed.