The "Skinny Pen" refers to a weight-loss medication called liraglutide (brand name Saxenda) that is administered through a daily injection. It works by mimicking a hormone that regulates appetite, helping patients feel fuller for longer. This treatment is often used for individuals who struggle with obesity but are not candidates for surgery or who need additional help in managing their weight post-bariatric surgery. The drug is available by prescription and is used in conjunction with diet and exercise.

Bariatric relates to treatments aimed at weight reduction, especially in individuals with severe obesity. This includes medical, surgical, and behavioral interventions. Bariatric surgery, such as gastric sleeve or bypass, is often a last resort for those who have struggled with losing weight through traditional methods.

Lap band surgery, also known as gastric banding, is a type of weight-loss surgery where a band is placed around the upper part of the stomach to create a small pouch. This restricts food intake, leading to weight loss. In the UK, lap band surgery is available through both private healthcare providers and the NHS. The procedure has become less common compared to other forms of bariatric surgery, such as the RNY or sleeve gastrectomy, due to its lower success rates and higher complication risks.

Roux-en-Y Gastric Bypass (RYGB) is a popular form of bariatric surgery that reduces the size of the stomach and reroutes the digestive system. This results in both restriction of food intake and malabsorption, leading to significant weight loss. The surgery is considered highly effective for morbidly obese individuals and also helps improve obesity-related health issues like diabetes, hypertension, and sleep apnea. However, it requires lifelong dietary changes and nutritional supplements to avoid deficiencies.