GLP-1, or Glucagon-Like Peptide-1, is a hormone naturally produced in the gut. It plays a key role in regulating blood sugar levels, insulin secretion, and appetite. In people with Type 2 diabetes, the body’s response to GLP-1 is impaired, which contributes to difficulties in controlling blood glucose levels. Additionally, GLP-1 helps to reduce food intake and promote satiety, making it a crucial player in the management of obesity.