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Arch Psychiatr Nurs. 2015 Apr;29(2):102-7. doi: 10.1016/j.apnu.2014.11.008. Epub 2014 Dec 9.

The effects of dietary tryptophan on affective disorders.

Author information

1
University of North Dakota, Grand Forks, ND. Electronic address: glenda.lindseth@und.edu.
2
University of North Dakota, Grand Forks, ND. Electronic address: brian.helland@und.edu.
3
Northland Community and Technical College, Bemidji, MN. Electronic address: Julie.caspers@ntcmn.edu.

Abstract

Using a randomized crossover study design, 25 healthy young adults were examined for differences in anxiety, depression, and mood after consuming a high tryptophan and a low tryptophan diet for 4days each. There was a 2week washout between the diets. A within-subjects analysis of the participants' mood indicated significantly (p<.01) more positive affect scores after consuming a high tryptophan diet as compared to a low tryptophan diet. Negative affect differences between the diets were not statistically significant (p>.05). Also, consuming more dietary tryptophan resulted in (p<.05) less depressive symptoms and decreased anxiety.

PMID:
25858202
PMCID:
PMC4393508
DOI:
10.1016/j.apnu.2014.11.008
[Indexed for MEDLINE]
Free PMC Article

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