Over 40% of new type one diabetics are over the age of 30 at the time of diagnosis.
Richard Oram from Exeter University said, “The assumption among many doctors is that adults presenting with the symptoms and signs of diabetes will have type two, but this misconception can lead to misdiagnosis which can have serious consequences”.
Clues to the person having type one can be failure to control blood sugar with tablets and the person being of a slim build.
The study was done by looking at the genetic biomarkers of over 13 thousand patients who had developed the disease before the age of 60.
BMJ 9 December 2017