Advances in medical care have led to type 1 diabetes boom

here's the citation for that stat:

Parkkola A, Harkonen T, Ryhanen SJ, Ilonen J, Knip M. Extended family history of type 1 diabetes and phenotype and genotype of newly diagnosed children. Diabetes Care 2013; 36(2):348-354.
http://www.ncbi.nlm.nih.gov/pubmed/23033245

There are other studies too, but this one also considers 2nd degree relatives. It is from Finland, a high-incidence country. The numbers may be different in a lower incidence country, I don't know. But since genetic risk is thought to partially explain Finland's high incidence rates, I'd guess the familial links would be even higher there than elsewhere. Guessing on that part though!

 

Here is our letter, it's now online. I don't see a response by the authors yet.

http://drc.bmj.com/content/4/1/e000161.abstract/reply#bmjdrc_el_52