To be considered for the gastric bypass you will need to have a Body Mass Index (BMI) of at least 35 if major health problems are already present, otherwise your BMI needs to be at least 40. (this is the same as for the sleeve gastrectomy)
Some of these health conditions include heart diseases, high blood pressure, type-2 diabetes, proven sleep apnoea, severe osteoarthritis, slipped discs in the back, high cholesterol readings, and polycystic ovarian syndrome.
Talk to your doctor to know more about your eligibility for a gastric bypass.