[auggierose]

You could also just say that one type of diabetes is about people who love cheeseburgers by nature, and the other one about people whose genes are broken in a different way (also by nature). Now, if you want to discuss which one is more important: maybe the one which occurs more commonly and is easier to cure?

[davnicwil]

Just to dispel a common misconception, the cause of type 1 diabetes remains unknown. There is no conclusive proof that the condition is genetic.

AFAIK there are certain correlations with the condition and the presence of certain gene combinations, and hypotheses abound that it is indeed a genetic condition, but they are still just hypotheses - research is ongoing.

[busterarm]

Its a big lie though. Type-2s genes are (usually) also broken. ;)