Researchers have uncovered a number

Researchers have uncovered a number of genetic regions that are linked closely with type 1 diabetes. Each of these is denoted with a name such as IDDM1.

At least 18 different regions have been discovered and some of the genetic areas include an increased susceptibility for other autoimmune diseases such as rheumatoid arthritis and coeliac disease.

Whilst genetics offers clues as to why some people are more susceptible to type 1 diabetes, it doesn’t explain why some people with these genes develop type 1 diabetes and why others with these genes don’t.

For example, having an identical twin with type 1 diabetes gives you a statistically higher risk but it doesn’t necessarily mean you will develop the condition.


Genetics does not explain either why people will develop type 1 diabetes at different ages. Type 1 diabetes is most commonly diagnosed in 10 to 14 year olds but can be diagnosed at any age.