If I had diabetes type 1 as a child, what are the chances my kid will have it too?

Higher chances. If an immediate relative (parent, sibling, child) has type 1 diabetes (t1d), one's risk of developing t1d is 10 to 20 times the risk of the general population. The risk for a child of a parent with t1d is lower if it is the mother, rather than the father, who has diabetes. If one of the parents developed t1d before age 11, their child's risk of developing t1d is somewhat higher than these figures.

Less than many think. Type 1 diabetes affects some ethnic groups more than others (white >>black) and has been loosly linked geneticly. Some research centers test families & identify susceptability but there is no direct link. Type 1 requires that a person make antibodies to Insulin producing cells & a virus when everyone else just makes antibodies to the virus.

1/100. In general, if you are a man with type 1 diabetes, the odds of your child getting diabetes are 1 in 17. If you are a woman with type 1 diabetes and your child was born before you were 25, your child's risk is 1 in 25; if your child was born after you turned 25, your child's risk is 1 in 100 (ada source).