Many factors have been related as causes of obesity. What is most probable, is that obesity results from a combination of genetic or hereditary influences, physical, psychological, environmental, social and cultural factors, which interact and influence people in such a way that they bring on an imbalance in their basic nutritional system, resulting in nutrition disorders.

However, there are some illnesses of the endocrine type that affect the general metabolism and cause a tendency to obesity. These illnesses must be identified and treated in order to balance the metabolism as well as possible and decrease their influence as factors that cause obesity.

People suffering from obesity usually cannot control their basic nutrition factors, which are: quantity, quality and frequency of meals.

People suffering from obesity usually cannot control their basic nutrition factors, which are: quantity, quality and frequency of meals. Thus, they eat in excess, without valuing the food, at any time of the day. People who follow this behavior pattern tend to stay obese and even gain more weight.

On the other hand, the lack of physical activity in obese people causes a significant reduction in the use of energy, which makes all the ingested energy store up as fat, thereby increasing their obesity.