Here are some information about the good and the bad side of weight lose.
Losing weight can be intentional, with diet and exercise, or unintentional, in which case a manifestation of disease.
Weight loss can result from a loss of muscle mass or volume of adipose tissue. Losing weight can be attributed to taking some medications, fluid loss, lack of fluid intake, or illnesses such as diabetes.
Reduced adipose tissue can be caused intentionally by diet and exercise, in case of obesity.
Weight loss is normal after birth.
Weakness of the body and hunger associated with chronic disease are called cachexia.
Losing weight for no reason and unintended may be caused by a disease and should be subject to a medical examination.