To explore the link between age of onset type 2 diabetes and the risk of dementia, scientists at the Université de Paris, examined data from the Whitehall II Study, a long-term study of health in British government employees.
Participants were aged between 35 and 55 when they enrolled.
Researchers analysed blood samples from every four to five years and electronic health records (EHRs) spanning 32 years, to identify participants who had type 2 diabetes and were taking medication to treat the condition.
Out of the 10,308 participants, a total of 639 were later diagnosed with dementia. Of the 1,710 diagnosed with type 2 diabetes, 153 were later diagnosed with dementia.