The causes of obesity

Several factors help explain obesity 

•  / genetic factors: they have an undeniable role but are not solely responsible 

A small number of genes have a significant impact on body size and the percentage or the regional distribution of body fat.

Overweight children aged one to ten years with at least one obese parent have a 80% risk of becoming obese in adulthood cons 10% chance if both parents are lean.

• / endocrinological factors: hormonal imbalance, glandular 
• / other medical factors 
• / environmental factors and behavioral changes 

- Junk food with high dietary (food high in fat). 
Western populations tend to consume fewer calories and less fat than in 1960 when they grow steadily. This reflects a change of lifestyle that is becoming increasingly sedentary.

- Lack of physical activity: there is a real imbalance between supply and swallowed it spent.