In the general population, obesity is a major public health problem. It is considered an inflammatory disease, multifactorial with chronic evolution, which requires long-term medical care and / or surgery . Indeed, the body mass index (BMI) correlates with increased mortality mainly due to cardiovascular diseases (hypertension, coronary artery disease), cancer and diabetes. Finally, overweight and obesity are the leading causes of liver disease in Western countries resulting in nonalcoholic fatty liver disease, a term that includes all the hepatic lesions observed in overweight and obesity: steatosis, steatohepatitis, fibrosis, cirrhosis or hepatocellular carcinoma. Nonalcoholic fatty liver disease reflects not only the presence of insulin resistance but also participates in its installation. Reducing overweight is therefore a key part of treatment to reduce chronic inflammation, insulin resistance and liver damage.