People with type 1 diabetes have a higher risk of developing dementia, according to a study. Type 2 diabetes is also linked to an increased risk of dementia compared to those without diabetes. However, the findings show only an association and do not prove that diabetes causes dementia. Type 1 diabetes is relatively rare, accounting for about 5 per cent of all diabetes cases.

"As advances in medical care have extended the lives of people with type 1 diabetes, it's becoming increasingly important to understand the relation of type 1 diabetes to the risk of dementia," said study author Jennifer Weuve, MPH, ScD, of Boston University. "We have known that type 2 diabetes is linked to an increased risk of dementia, but this new research suggests that, unfortunately, the association may be even stronger for those with type 1 diabetes."