In the States, family members of type 1's can join the Trialnet Natural History study and they test for antibodies to type 1. Some people have them before they get diabetes. But some people have the antibodies and never get diabetes too. But it does show who's at risk. I don't know if something similar is over there. Do you come to the States to visit much with your younger kids? If you do, I wonder if Trialnet would test them. I don't know if there is a residency requirement or not, but might be worth looking into if you come back anytime soon. Even for siblings of type 1 kids, the odds are still pretty low for getting type 1. I'm sure someone knows the odds for children of type 1 parents, but I don't think it's very high. You know what symptoms to watch for and it's unlikely any of them will get it. If you're ever in doubt, you've got a meter and you can always test your kids if they show symptoms. But do remember that the odds are in their favor that they won't get it.