<unk>  means having too much body fat. It is not the same as being overweight, which means weighing too much. A person may be overweight from extra muscle, bone, or water, as well as from having too much fat.
Both terms mean that a person's weight is higher than what is thought to be healthy for his or her height.
Obesity
Body mass index
Central obesity
Smoking
Diet 
Multiple birth
Sedentary lifestyle
Body volume index