A Type 2 Diabetes Diagnosis Before Age 60 Might Increase Dementia Risk By 300%

Individuals who are diagnosed with type 2 diabetes before the age of 60 years—meaning their prediabetes evolved—may be three times more likely to develop dementia later in life compared to their peers without diabetes. Prediabetes is defined as blood sugar levels that are higher than normal, but not high enough for a type 2 diabetes diagnosis.

After age 60, the risk of dementia was greatly reduced in those diagnosed with type 2 diabetes:

Type 2 diabetes diagnosis between age 60 and 69 years: 73% greater risk of dementia
Type 2 diabetes diagnosis between age 70 and 79 years . . .