EFFECTS OF PEANUT (NAKATEYUTAKA) INGESTION ON COGNITIVE FUNCTION IN COMMUNITY-DWELLING ELDERLY PERSONS

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  • KATO Morimasa
    Department of Health and Nutrition, Yamagata Prefectural Yonezawa University of Nutrition Sciences
  • SEKI Junichi
    Agricultural administration, Kaneyama town office
  • ITO Haruka
    Department of Health and Nutrition, Yamagata Prefectural Yonezawa University of Nutrition Sciences
  • KURATA Daisuke
    Bean Research Section, Denroku Co Ltd.

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Other Title
  • 落花生（ナカテユタカ）の摂取が地域在住高齢者の認知機能に及ぼす影響

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Abstract

<p>This study was a crossover trial that examined the effects of a 12-week peanut (Nakateyutaka) consumption on the cognitive function of community-dwelling elderly persons. These peanuts were cultivated in Kaneyama town, Yamagata Prefecture. Cognitive function was assessed using a computer-based test battery. During the peanut ingestion period, the verbal memory scores of the participants significantly increased post-intervention compared to their pre-intervention scores. Pre- and post-interventional changes in verbal memory and anger scores, which are part of a psychological index, showed a significantly negative correlation. In addition, there was no significant difference in the pre-and post-interventional urinary cortisol levels during the peanut ingestion period. However, during the control period, higher urinary cortisol levels were observed post-intervention than pre-intervention. The improvement of verbal memory through peanut consumption may involve the antioxidant effects of polyphenols (contained abundantly in peanuts), which can alter mood, specifically anger, and suppress the effects of increased stress levels.</p>

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