It's an interesting area. As best as I can tell, even if you're not overweight, if you are sedentary, you are most probably insulin resistant, which is step 1 to becoming diabetic.

Also - and I should save this question for a diabetologist - doesn't a high fasting glucose reading indicate an issue with glucagon and the alpha cells? To my understanding, fasting levels are from gluconeogenesis in the liver, controlled by the glucagon the alpha cells secrete.

Not a bio person, just got interested when my dad was diagnosed back in the 90s - and he was what they called a 'brittle' diabetic, which I now take to be a an issue in glucagon regulation.