Bariatric refers to the branch of medicine that deals with the causes, prevention, and treatment of obesity. Bariatric surgery includes weight-loss procedures like gastric bypass, sleeve gastrectomy, and lap band surgery, which help patients lose significant amounts of weight and improve obesity-related health conditions.

In the UK, diet pills can be prescribed by doctors or purchased over-the-counter. Common options include Orlistat (available on the NHS), which reduces fat absorption, and appetite suppressants like Phentermine. The use of diet pills should always be monitored by healthcare professionals to avoid potential side effects or misuse.

Weight lost refers to the reduction in body weight that is typically achieved through lifestyle changes, medications, or bariatric surgeries like the RNY or gastric band. Weight loss, particularly significant or rapid weight loss, can have dramatic positive effects on a person's overall health, reducing the risk of heart disease, diabetes, and other obesity-related conditions. Successful weight loss usually requires long-term changes to diet, exercise, and behavior.

A gastrectomy is the surgical removal of part or all of the stomach. It is often performed to treat stomach cancer, severe ulcers, or obesity. A partial gastrectomy removes only a portion, while a total gastrectomy removes the entire stomach, requiring significant lifestyle changes post-surgery.

A sleeve diet plan involves gradual dietary progression after surgery, focusing on protein-rich foods, minimal carbohydrates, and small portion sizes. Long-term, patients must continue eating nutrient-dense, low-calorie meals to maintain weight loss. Key components include lean meats, vegetables, whole grains, and avoiding sugary and fatty foods.