The best weight loss clinics in the UK offer a combination of services, from medical weight-loss treatments like bariatric surgery and prescription medications to lifestyle programs involving diet, exercise, and behavioral therapy. These clinics often have multidisciplinary teams of specialists, including dietitians, doctors, and psychologists.

The gastric sleeve or Vertical Sleeve Gastrectomy (VSG) involves the removal of a large portion of the stomach, leaving a sleeve-shaped stomach. This surgery is purely restrictive, meaning it reduces the stomach’s size to limit food intake. It’s highly effective for weight loss and requires fewer alterations to the digestive system than the gastric bypass.

A pre-surgery diet prepares the body for bariatric surgery, typically focusing on reducing liver size and overall fat to make the procedure safer. This high-protein, low-carbohydrate diet often lasts for 1-2 weeks before surgery. Patients must follow a strict plan of liquids and protein shakes to shrink the liver and facilitate surgery.

A bowel doctor, another term for a gastroenterologist, focuses on the intestines and related organs. Patients may seek care from a bowel doctor for conditions like Crohn's disease, ulcerative colitis, diverticulitis, or bowel cancer. They also manage complications that arise in the bowel following surgeries like the Roux-en-Y gastric bypass or gastric sleeve.

RNY (Roux-en-Y) gastric bypass and the gastric sleeve (sleeve gastrectomy) are two of the most common bariatric surgeries. While both procedures restrict the stomach’s size, the RNY bypass also reroutes part of the small intestine, reducing calorie absorption. The sleeve removes a large portion of the stomach without altering the intestines. The choice between the two depends on the patient’s health, goals, and surgeon recommendations.