There are two main causes: diets which are too rich in carbohydrates and fats and our increasingly sedentary lifestyles. Our bodies are no longer using up all the energy that we consume as food!
Although it is impossible to change some of the factors involved in overweight and obesity, such as genetic predisposition, it is now possible, particularly with individualised help and support from healthcare professionals, to adopt a healthier diet and make lasting changes to eating habits.
The aim is for everyone to regain a healthy weight at which they feel well.
WHO website: http://www.who.int/fr/news-room/fact-sheets/detail/obesity-and-overweight
* Source BEH N° 13, 13 juin 2017 : Corpulence des enfants et des adultes en France métropolitaine en 2015. Résultats de l’étude Esteban et évolution depuis 2006.