Usually there is not only one single cause for obesity.
Overweight is caused by eating to much fat. Biological as well as life-style factors
contribute to this problem. A lot of obese people are not aware of their physical
hunger and satisfaction. They lack a natural control of their eating and can,
because of that, more easily be caught in an abuse of food. Such a person eats
in order to suppress negative feelings, and to escape problems instead of facing
up to them.