If you are overweight or obese (you have a body mass index of 30 or greater), you are at greater risk of developing type 2 diabetes.
In particular, fat around your abdomen (tummy) puts you at increased risk. This is because it releases chemicals that can upset the body's cardiovascular and metabolic systems. This then increases your risk of a developing various conditions, including heart disease, stroke and some types of cancer.
A quick way of assessing your diabetes risk is to measure your waist. This is a measure of abdominal obesity, which is a particularly high-risk form of obesity.
Women have a higher risk of developing type 2 diabetes if their waist measures 31.5 inches (80cm) or more. Asian men with a waist size of 35 inches (90cm) or over have a higher risk, as do white or black men with a waist size of 37 inches (94cm) or over.
Reducing your body weight by about 5% and exercising regularly could reduce your risk of getting diabetes by more than 50%.