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Nutrients 2016, 8(11), 668; doi:10.3390/nu8110668

Effects of Walnut Consumption on Mood in Young Adults—A Randomized Controlled Trial

Nutrition Program, Department of Individual, Family & Community Education, College of Education, University of New Mexico, Hokona Hall 157 MSC05 3040, Albuquerque, NM 87131-0001, USA
Received: 15 July 2016 / Revised: 23 September 2016 / Accepted: 11 October 2016 / Published: 25 October 2016
(This article belongs to the Special Issue Nutrition in Mental Health)
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Abstract

Walnuts contain a number of potentially neuroprotective compounds like vitamin E, folate, melatonin, several antioxidative polyphenols and significant amounts of ω-3 fatty acids. The present study sought to determine the effect of walnuts on mood in healthy volunteers. Sixty-four college students were randomly assigned to two treatment sequences in a crossover fashion: walnut–placebo or placebo–walnut. At baseline mood was assessed using Profiles of Mood States (POMS). Data was collected again after eight weeks of intervention. After six-weeks of washout, the intervention groups followed the diets in reverse order. Data was collected once more at the end of the eight-week intervention period. No significant changes in mood were observed in the analyses with both genders combined and in females. However, we have observed a significant medium effect size improvement in the Total Mood Disturbance score (−27.49%, p = 0.043, Cohen’s d = 0.708) in males. In non-depressed healthy young males, walnuts seem to have the ability to improve mood. View Full-Text
Keywords: randomized controlled trial; RCT; walnuts; males; mood randomized controlled trial; RCT; walnuts; males; mood
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Pribis, P. Effects of Walnut Consumption on Mood in Young Adults—A Randomized Controlled Trial. Nutrients 2016, 8, 668.

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