The research, published in the journal PLOS ONE, examined whether culture-based age beliefs influence the risk of developing dementia among older people, including those who carry the high-risk gene variant.
"We found that positive age beliefs can reduce the risk of one of the most established genetic risk factors of dementia," said Becca Levy from the Yale University in the US.
"This makes a case for implementing a public health campaign against ageism, which is a source of negative age beliefs," Levy said.
The study demonstrated that APOE e4, a high-risk gene variant, carried with positive beliefs about ageing had a 2.7 per cent risk of developing dementia, compared to a 6.1 per cent risk for those with negative beliefs about ageing, over the four-year study duration.
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