GLP-1 Receptor Agonists

GLP-1 receptor agonists are the best-evidenced pharmacological route to weight and glucose control that exists, and the honest verdict is that they are excellent for the right person and a lifelong commitment for everyone who uses them. The weight loss is large, the glucose control is strong, and the cardiovascular and kidney outcome data is something almost no other metabolic intervention can claim (Lincoff et al. 2023). Against that sit frequent gut side effects, a real cost, muscle loss without training, and the fact that stopping means regaining most of the weight. This is not a shortcut to try casually. It is a serious, effective therapy for defined conditions, best used with a plan for training, protein and long-term maintenance.

✅ Best for: People with type 2 diabetes who want strong glucose control with cardiovascular and kidney protection built in. People with class 2 or class 3 obesity for whom lifestyle change alone has not worked and who can commit to long-term therapy. People with established cardiovascular disease and obesity, the SELECT population, who gain event reduction independent of diabetes. People with obesity and obstructive sleep apnoea, where tirzepatide has a dedicated indication. People willing to pair the drug with resistance training and adequate protein so the weight lost is fat rather than muscle.

❌ Avoid if: You have a personal or family history of medullary thyroid cancer or multiple endocrine neoplasia type 2, an absolute contraindication for the class. You have had pancreatitis or active gallbladder disease, which the class can worsen. You are pregnant, trying to conceive or breastfeeding, since safety is not established and the drug must be stopped before conception. You use mealtime insulin or a sulfonylurea without a plan to adjust them, given the hypoglycemia risk. You want a short-term fix rather than an ongoing therapy, because the weight returns once you stop.