Avoiding 3 Middle-Age Habits May Delay Dementia by 13 Years, Study Finds

Maintaining a healthy lifestyle in middle age could significantly delay the onset of dementia, according to a new study. Researchers found that individuals who avoided smoking, high blood pressure, and Type 2 diabetes experienced nearly 13 years more free of dementia compared to those with all three risk factors.

The study, published in Neurology Open Access, tracked over 12,400 dementia-free participants aged 55 for an average of 26 years. It revealed that the total cardiovascular burden, rather than isolated factors, is a key determinant of dementia-free survival. Those with all three risk factors were more than twice as likely to develop dementia and over five times more likely to die prematurely from other causes.

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These findings indicate that total cardiovascular burden, rather than isolated risk factors, is a key determinant of dementia-free survival.

"These factors often emerge in midlife and exert lasting effects on neurodegenerative pathology, underscoring the critical importance of early identification and management," the study authors stated. The findings also indicated that women lived about a year and a half longer without dementia than men, and white individuals had over three and a half more dementia-free years than Black individuals.

Recent research also highlights potential pharmaceutical interventions. Two studies in JAMA Neurology suggest GLP-1 medications like Ozempic and Wegovy may reduce dementia risk by 33% in Type 2 diabetes patients, while SGLT2 inhibitors showed an even greater benefit. Separately, a BMJ Evidence-Based Medicine study found that any alcohol consumption increases dementia risk, with a threefold increase in intake raising the risk by 15%.

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These factors often emerge in midlife and exert lasting effects on neurodegenerative pathology, underscoring the critical importance of early identification and management.