Semaglutide is prescribed as a weight-loss treatment to patients who need to reduce their BMI but who have struggled to achieve any significant weight loss with diet and exercise alone. It can cause weight loss because it helps to suppress your appetite. Semaglutide contains a GLP-1 receptor as the active medicine. Drugs like this are designed to mimic a hormone that our bodies naturally produce after we’ve eaten. This hormone is what sends a signal to the brain, telling you to stop eating because you’re satisfied, but the natural form of this hormone. It also slows down the digestive process so that any food you’ve eaten stays in your stomach for longer, making you feel more satisfied