Justin Delgado is husband to Kacie Doyle-Delgado, diagnosed at age 11. After more than a decade together, he considers himself to be an expert carb counter and Dexcom inserter. He graduated with his Master of Science in Finance from the University of Utah in 2013 and has been working in commercial banking since then. He attended his first Friends for Life conference in 2015 and is looking forward to volunteering with the teens.
April 2, 2007
Genetics and Heredity
Question from Victorville, California, USA:
I have been told that type 1 diabetes is hereditary. I was diagnosed in 1966 at the age of seven. No one else in my family was ever diagnosed. So, if it is hereditary, why am I the only one is my genealogical history that has ever been diagnosed?
The inheritance pattern for type 1 diabetes is different than that of type 2 diabetes. For offspring of parents with type 2 diabetes, there is roughly a 50% chance of inheriting diabetes. For those with type 1 diabetes, it is much less, at around 10%. This means that many people develop type 1 diabetes without other recent members of their family having had the disease. We believe that type 1 diabetes has a complicated inheritance pattern where you inherit a predisposed risk for the disease, but also require some environmental hit, such as an infection or another exposure, to get the disease. It is also interesting that men with type 1 diabetes have a slightly higher risk of offspring developing type 1 diabetes, compared to women. The risk is something like 10 to 15% for men, but only 5 to 10% for women.