From Derby, New Hampshire, USA:
My almost eight year old son has had type 1 diabetes since the age of four, and my 11 year old daughter was recently (the past 3 months) diagnosed. How common is it for siblings to have type 1 diabetes with no family history of the disease?
The chances of a second sibling developing type 1A (autoimmune) diabetes is about 1:20, irrespective of whether there is a family history of this kind of diabetes. The figure is a little higher if the father is the affected first degree relative, and a little lower if it is the mother.
In the great majority people with new onset type 1A diabetes, there is no family history. This to a large extent is because although genetic predisposition can be assessed, the influence of environmental triggers are as yet unknown.
Original posting 4 Jan 2002
Posted to Genetics and Heredity
Last Updated: Tuesday April 06, 2010 15:09:30
This Internet site provides information of a general nature and is designed for educational purposes only. If you have any concerns about your own health or the health of your child, you should always consult with a physician or other health care professional.
This site is published by T-1 Today, Inc. (d/b/a Children with Diabetes), a 501c3 not-for-profit organization, which is responsible for its contents. Our mission is to provide education and support to families living with type 1 diabetes.
© Children with Diabetes, Inc. 1995-2017. Comments and Feedback.