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Dementia is on the rise in Germany. In the absence of treatment options, the focus is shifting to preventing dementia. In particular, a healthy lifestyle is considered beneficial for brain health.

A study by the Faculty of Medicine now shows that opportunities for a healthy lifestyle are unequally distributed: being socially disadvantaged is associated with a higher risk of dementia. The current findings have been published in the Journal of Alzheimers Disease.

As the population ages, dementia is on the rise. Currently, about 1.8 million people in Germany suffer from dementia. Population statistics predict an increase to around three million by 2050. International research demonstrates great potential for dementia prevention based on modifiable health and lifestyle factors, such as hypertension, is aleve bad for your kidneys obesity, physical and mental activity, and diet. In other words: a healthy lifestyle is good for brain health.

“But the opportunities are unequally distributed,” says Dr. Susanne Röhr, head of the current study and a researcher at the Institute of Social Medicine, Occupational Medicine and Public Health (ISAP) at Leipzig University. “Socially disadvantaged individuals, such as those on low incomes, tend to have a higher risk of dementia.”

The researchers used data from more than 6,200 participants in the LIFE Adult study at the Leipzig Research Center for Civilization Diseases. The proportion of women and men was the same. The subjects were between 40 and 79 years old and were not affected by dementia.

The large data base of the population-based cohort study enables the Leipzig scientists to map a complex lifestyle index with twelve modifiable risk factors for dementia. These include hypertension, physical activity, smoking, obesity, and dietary habits. Subsequently, the influence of the index on the relationship between socio-economic factors such as education, occupational status, and household income, and mental performance and results of neuropsychological tests, is examined.

The results of the current study show that differences in mental performance due to social inequalities are related to modifiable health and lifestyle factors for dementia. “This suggests that lifestyle interventions could mitigate social inequalities in cognitive performance,” adds Professor Steffi Riedel-Heller, director at ISAP.

According to the researchers, however, health and lifestyle factors only explain differences in mental performance due to socio-economic factors to a small extent. The study findings therefore also suggest that the greater emphasis may be on the social conditions themselves. “Political measures aimed at reducing social inequalities could therefore contribute significantly to reducing the risk of dementia,” says Dr. Röhr.

More information:
Susanne Röhr et al, Socioeconomic Inequalities in Cognitive Functioning Only to a Small Extent Attributable to Modifiable Health and Lifestyle Factors in Individuals Without Dementia, Journal of Alzheimer’s Disease (2022). DOI: 10.3233/JAD-220474

Journal information:
Journal of Alzheimer’s Disease

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