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Study challenges coffee’s reported brain benefits


Increased intakes of coffee do not affect the rate of decline in mental functions as we age, nor the risk of dementia, according to new results from Finland.

While a large body of science has already reported that increased intakes of coffee may offer protection from diseases like Alzheimer’s and Parkinsons, as well as increasing learning and concentration, results of a study with 2,606 middle-aged Finnish twins did not find any such benefits.


Participants were followed for 28 years, and no effect of coffee consumption was observed on cognitive performance between twins with different coffee drinking habits.


“Coffee drinking is associated with many sociodemographic and health variables, but our results do not support an independent role of coffee in the pathogenesis of cognitive decline and dementia,” concluded the researchers.


Source: American Journal of Clinical Nutrition
Volume 90, Pages 640-646, doi:10.3945/ajcn.2009.27660
Coffee drinking in middle age is not associated with cognitive performance in old age”
Authors: V.S. Laitala, J. Kaprio, M. Koskenvuo, I. Raiha, J.O. Rinne, K. Silventoinen


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