Obesity surgery



  • Surgery Department
    The Division of Digestive Surgery
    Rue Gabrielle-Perret-Gentil 4
    1205 Geneva - Suisse

    Monday to Friday from 9:30 am -11:30 am and from 14:00 pm - 16:00 pm

    Find us

Christian Toso
Christian Toso
Head of Division

This information is intended for people considering obesity surgery and their relatives in order to answer their questions.

chirurgie de l’obésité

Obesity is a chronic disease that can be complicated by many conditions, such as diabetes (FR), hypertension (FR), cardiovascular diseases (FR), sleep apnoea (FR), musculoskeletal problems (FR) (arthritis, back pain, herniated discs, osteoarthritis in the hips, …) and infertility.       

How do you measure obesity ?

Obesity is measured by the Body Mass Index (BMI) which is calculated by dividing your weight (in kilograms) by the square of your height (in meters) :

Weight(kg)/(Height(m) x Height(m))

BMI 25.0-29.9 kg/m2 = overweight 
BMI 30.0-34.9 kg/m2 = moderate obesity or grade I obesity
BMI 35.0-39.9 kg/m2 == severe obesity or grade II obesity
BMI ≥ 40.0 kg/m2 = morbid obesity or grade III obesity

The prevalence of obesity has more than doubled since 1980 according to the World Health Organization. In Switzerland, it affects 11% of men and 9% of women.

Download the Obesity Surgery brochure (FR)


Les HUG ont inauguré en avril 2022 le Centre de l'obésité et de la chirurgie bariatrique. Ce centre offre une prise en charge globale et multidisciplinaire dans la prévention et le traitement de l'obésité.

Last update : 05/01/2022