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Nutrients. 2016 Oct 25;8(11). pii: E668.

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

Author information

1
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. pribis@unm.edu.

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.

KEYWORDS:

RCT; males; mood; randomized controlled trial; walnuts

PMID:
27792133
PMCID:
PMC5133056
DOI:
10.3390/nu8110668
[Indexed for MEDLINE]
Free PMC Article

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