The background for the trial is a number of previous studies indicating that it is especially important to restrict the intake of carbohydrates when treating overweight and metabolic diseases in general.

The purpose of the study is to obtain research data on the effects of an established treatment of overweight/obesity and its related metabolic disorders. The treatment, "Dr. Fedon Lindbergs Vektcoach", is a combination treatment where patients use low carbohydrate and low energy "Eurodiet" products in the initial phases. After the initial phases are completed, low glycemic normal foods are added to the diet until a sustainable and healthy diet is achieved. The treatment is of 7 month duration.

Inclusion Criteria:

• Body Mass Index (BMI)>35
• BMI>27 + one risk factor for cardiovascular disease or metabolic syndrome
• >18 years

Exclusion Criteria:

• Medicinal treatment of thyroid disease
• Pregnancy or planned pregnancy
• Taking of diet pills like Xenical or Sibutramine