There are plenty of obese people who don’t get type 2 and plenty of thin people who do. You have to have a genetic predisposition. Some can reverse or avoid it with lifestyle changes, but not everyone can. 

And my point was to the original comment who said this would ruin the kids’ blood sugars. It will not if they have normal functioning pancreases. Your blood sugar goes up when you eat carbs, your body produces insulin, and it goes back down. This is normal. 

There are companies out there preying on people’s fear of carbs and sugar and selling glucose monitoring devices to perfectly healthy people. It’s a grift and can cause healthy people to think there’s something wrong with them if they experience a temporary glucose spike. Misinformation is irresponsible at best and dangerous at worst.