The CDC says: “You can prevent or delay type 2 diabetes with proven, achievable lifestyle changes—such as losing a small amount of weight and getting more physically active—even if you’re at high risk.”
It notes that before developing type 2 diabetes, most people have prediabetes.
This is when their blood sugar is higher than normal but not high enough yet for a diabetes diagnosis.
The Mayo Clinic says losing weight reduces the risk of diabetes, so this may help if you are overweight.