Study finds link between type 1 diabetes and dementia

A large NIH-supported study reveals that individuals with type 1 diabetes face a threefold increased risk of developing dementia, emphasizing the importance of monitoring cognitive health in diabetic patients.
March 19, 2026

A recent National Institutes of Health (NIH)-supported study has found a connection between type 1 diabetes and dementia risk. The American Academy of Neurology (AAN) reported the findings in a press release.

It is important to note that diabetes has not been found to cause dementia. The study, published in Neurology, followed 283,772 adults, including more than 56,000 with diabetes for about 2.4 years. Key findings:

  • Less than 1% of participants without diabetes developed dementia.
  • Nearly 2% of the analyzed individuals with type 2 diabetes were diagnosed with dementia.
  • More than two and a half percent of participants with type 1 diabetes were found to develop dementia during the study period.
  • About 65% of study participants with type 1 diabetes and dementia could link the two diseases.

The researchers concluded that individuals with types 1 or 2 diabetes are more likely to be diagnosed with dementia later, with type 1 carrying a 3X higher risk.

About the Author

Erin Brady

Managing Editor

Erin Brady is Managing Editor of Medical Laboratory Observer.

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