
Severe Infections, Especially UTIs, Linked to Higher Dementia Risk in Seniors
A Finnish study of 62,555 people aged 65+ with late-onset dementia (2017–2020) and 312,772 matched controls found 29 risk factors for dementia. Among infections, only urinary tract infections (UTIs) and bacterial infections were linked to dementia, with severe infections—especially UTIs—associated with a 19% higher risk after adjusting for other conditions. The time between infection and dementia diagnosis averaged five to six years. While this suggests infections may contribute to dementia risk, it does not prove causality, and the researchers call for intervention studies. Non-infectious risks included alcohol-related disorders, Parkinson’s disease, and brain disease.













