The requirements for a patient to be evaluated as a candidate to undergo a Bariatric Surgery operation are:

• -Obesity for more than 5 years and repeated failure of conventional treatment.
• -No alcoholism.
• -Age between 18 and 60 years (16 years in selected cases).
• -Not have untreated depression or some other major psychiatric disorder.

Some contraindications (surgery cannot be performed in these cases):

• -Alcoholism.
• -Active neoplastic disease (cancer).
• -Cirrhosis (with portal hypertension).
• -Pregnancy.
• -Inmobility (Dependence on a wheelchair or scooter).
• -Drug dependence.
• -Incapacity to adhere to prolonged treatment regimens such as vitamin intake, long-term follow-ups of your health status.
• -Medical disability that interferes with the patient's ability to understand the risk-benefit of surgery.
• -Incurrable or unstable pre-existing diseases (ischemic heart disease, severe and uncontrolled obstructive sleep apnea that is accompanied by pulmonary hypertension, AIDS, uncontrolled psychiatric state.