Weight loss is the reduction of total body mass, due to an average loss of fluids, body fat or lean mass such as muscle tendons, bone mineral de Weight can occur unintentionally due to malnourishment or some underlying disease, or intentionally from a conscious effort to improve the overweight or obese state. Unintentional weight loss not caused due to a reduction in calorific intake or exercise is known as cachexia. It may occur as a symptom of some severe medical condition. Intentional weight loss is commonly known as slimming. Intentional weight loss is a loss of total body mass as a result of efforts to improve health and fitness, or to change appearance through slimming. Weight loss is also the primary treatment for obesity, and there are substantial pieces of evidence that it can prevent prediabetes leading to diabetes type 2 with a 7-10% weight loss and management of cardiometabolic health for diabetic people with 5-15% weight loss.