Key points
Obesity is a chronic disease with many causes. Biology, heredity, environment and living conditions interact. It is not simply a matter of willpower. Understanding your history helps us build care that suits you.
A disease that has become global
Obesity affects every region of the world. Its rise is linked in particular to changes in our surroundings: the food on offer, the pace of life and the opportunities to be active day to day. This collective dimension helps explain why so many people are affected.
The role of biology and heredity
Our body regulates hunger, fullness and energy expenditure. These mechanisms differ from one person to another. Heredity can make weight gain more likely, without determining on its own how each person’s weight develops.
Daily life matters too
Diet, time spent sitting, working hours and access to physical activity all influence weight. The possibilities for change also depend on the time available, budget and personal constraints.
Support aims to help you develop habits that fit your life, while preserving the enjoyment of eating and moving.
Sleep and emotions
Not getting enough sleep can disturb appetite regulation. Stress and emotions can also change the way we eat. These aspects are discussed when they concern you, with support suited to your needs.
Some treatments or health problems
Some medicines and some health conditions can contribute to weight gain. The medical consultation helps identify these factors and decide whether targeted tests are needed.
Understanding your situation at the Centre
The first consultation reviews how your weight has changed, your health, your treatments and your daily life. You do not need to have had a specialist assessment before booking an appointment.
On this basis, we work with you to build a care plan that may combine nutritional support, adapted physical activity, medication and surgery, depending on your situation.
Further reading
Medical review of the French version: Dr Pierre Fournier
Scientific sources and references
Sources accessed on 15 October 2026.
- World Health Organization. Obesity and overweight. Fact sheet, 7 October 2026. View source
- National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK). Factors Affecting Weight & Health. Understanding Adult Overweight & Obesity. Page last reviewed May 2023. View source
- Author
- Prepared for the Centre from the sources cited
- References
- See “Scientific sources and references” on this page