What is the likelihood of someone with my physique and lifestyle having type 2 diabetes?

I’m male, 180 cm tall, 66kg, very slim, very small appetite, take plenty of exercise, am teetotal, non-smoker. Yet my blood test suggests I’m likely to have type 2 diabetes. I had an uncle who also developed it but he was, unlike me, grossly overweight Why would I have it? http://bit.ly/rdRy2o