I have a friend who is diabetic, but I feel she is doing it wrong? Like, I eat healthier than she does (she and her husband will finish off 2 large pizzas! like...wtf!?) and everything sweets wise is compared to a bar of candy?

I'm over here eating healthy and doing the right portions of food, but I'm far too sedentary so the fat just collects and I could be diabetic...and/or I could also have a problem with my thyroid.