18% of the population in France is affected by obesity.
75% confidence
HealthFrance
Omissions
Obesity data generally refers to the adult population (18-74 years), not the total population.
There is an important distinction between 'overweight' (BMI 25-29.9) and 'obesity' (BMI ≥30): nearly 48% of the French population is overweight or obese, but only 17% has obesity proper.
The most authoritative data source (Santé Publique France, OFEO 2024 study) indicates approximately 17% obesity, not 18%.
The rate has increased from the 15% recorded in 2022 according to the OECD to 17% in more recent data.