Gastric bypass surgery involves creating a small pouch from the stomach and connecting it directly to the small intestine. It significantly reduces food intake and alters digestion, leading to substantial weight loss. This procedure is one of the most common forms of bariatric surgery and is highly effective for long-term weight reduction.

After sleeve gastrectomy, patients follow a specific diet to help the stomach heal and ensure success in weight loss. The diet starts with liquids, followed by pureed foods, and eventually soft foods before transitioning to solid foods. High-protein, low-fat, and low-sugar meals are critical, along with small, frequent portions.

The intragastric balloon is a non-surgical weight-loss method where a balloon is inserted into the stomach to reduce its capacity temporarily. While it can be an effective weight-loss tool, patients may experience side effects like nausea, vomiting, abdominal discomfort, acid reflux, and, in rare cases, balloon deflation or migration. Most side effects occur in the first few days after the procedure and can be managed with medication.

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.