Walnuts May Improve Memory

Eating walnuts may improve performance on cognitive function tests, including those for memory, concentration and information processing speed, according to new research from the David Geffen School of Medicine at the University of California-Los Angeles, led by Dr. Lenore Arab. Cognitive function was consistently greater in adult participants that consumed walnuts, regardless of age, gender, or ethnicity.

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This cross-sectional study is the first large representative analysis of walnut intake and cognitive function, and the only study to include all available cognitive data across multiple National Health and Nutrition Examination (NHANES) surveys. The NHANES surveys draw from a large sampling of the U.S. population, typically ages 1 to 90 years old. In this study, participants included adults ages 20-59 as well as 60 and over. Study participants with higher walnut consumption (but just a handful a day) performed significantly better on a series of six cognitive tests.

The study adds to a growing body of research surrounding walnuts’ positive effect on reducing cognitive impairment and overall brain health, which includes the possible beneficial effects of slowing or preventing the progression of Alzheimer’s disease in mouse models.

There are numerous possible active ingredients in walnuts that may be contributing factors in protecting cognitive functions. This includes the high antioxidant content of walnuts, the combination of numerous vitamins and minerals as well as the fact that they are the only nut that contains a significant source of alpha-linolenic acid, a plant-based omega-3 fatty acid with heart and brain-health benefits.

“It isn’t every day that research results in such simple advice — eating a handful of walnuts daily as a snack, or as part of a meal, can help improve your cognitive health,” Arab says.

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Source: California Walnut Commission

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