That’s T1. T2 is a lifestyle disease and is entirely preventable and reversible.
I have two type 1 children. There is no diabetes of any kind in either my background or their father's.
And yes, type 2 is preventable and reversible. Eat right, exercise, and don't be fat. Yes, I know non-fat people get it but the ones I've known have a high fat diet, most of it from animals, and do not move.