Twins and Type 1

Wondering how many of you have twins who both are T1?
How far apart were they diagnosed?
Identical twins vs Fraternal?

Mom T1 teen

I have never heard or seen of any T1s identical twins, but the ADA website reports:

“Genes alone are not enough. One proof of this is identical twins. Identical twins have identical genes. Yet when one twin has type 1 diabetes, the other gets the disease at most only half the time. When one twin has type 2 diabetes, the other’s risk is at most 3 in 4.”