50대에 ‘3가지’만 피하면…치매 13년 늦춘다

As people enter their 50s, they face a critical period where their midlife health decisions can greatly impact their later years. One major concern for this age group is dementia, a condition that not only diminishes the quality of life for the individual but also strains family life. Research reveals that three key factors – smoking, diabetes, and hypertension – can significantly affect dementia risk during middle age.

A study published in the journal Neurology Open Access analyzed data from 1,240,909 American adults aged 45 to 65, tracking their health for 26 years. Of these, 3,008 participants developed dementia, while 5,238 died without it. The researchers found that individuals with all three risk factors – smoking, diabetes, and hypertension – had a 2.7 times higher chance of developing dementia compared to those without any of these factors.

Even when considering other variables such as gender, education, physical activity, BMI, and the APOE gene variant associated with Alzheimer's, the results remained consistent. Participants who avoided all three risk factors lived an average of 12.6 more years dementia-free compared to those who had all three. Those with one or two risk factors lived an average of 17.5 to 18.1 years dementia-free.

The findings suggest that making these lifestyle changes in middle age can greatly reduce the risk of dementia and increase overall lifespan. However, the study emphasizes that more research is needed to determine the full extent of these benefits. While the current research does not account for factors like hearing loss, social isolation, or air pollution, the authors stress that even considering these variables, the protective effects of avoiding these three midlife risk factors could be even greater.