Maybe they got confused between Type 1 (Diabetes) and Type 2 (Beetus).  My husband has had Type 1 since the age of 9 and it really isn't his fault. It's an autoimmune disorder which, in his case, was triggered by the chicken pox virus sending his immune system overboard. His Dad (although slim, BMI of 22) discovered he was pre-diabetic (Type 2) just before he turned 70 because he was a complete sugar fiend! Totally his own fault! He's ate too much sugar, even though he's slim. He was maintaining healthy calorie levels and thought that meant he'd be okay. Nope, sugar was silently killing him! He's now almost completely cut added sugars from his diet (no more stuffing sweets in his face while watching TV!) and has completely reversed the problem. His blood sugars are now back within the perfect levels.  We shamed the shit out of him for his bad habits and it worked, he's now slim and healthy.  Unfortunately it doesn't work that way for his Type 1 son. He's as healthy as can be lifestyle wise but he'll always be diabetic!! One doesn't deserve shaming, the other does!!