title: The effects of dietary tryptophan on affective disorders.
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.
authors: University of North Dakota, Grand Forks, ND. Electronic address: glenda.lindseth@und.edu.
authors: Glenda
authors: G
authors: Lindseth
authors: University of North Dakota, Grand Forks, ND. Electronic address: brian.helland@und.edu.
authors: Brian
authors: B
authors: Helland
authors: Northland Community and Technical College, Bemidji, MN. Electronic address: Julie.caspers@ntcmn.edu.
authors: Julie
authors: J
authors: Caspers
mesh_terms: D000339:Affect / Q000187:drug effects*; D001008:Anxiety Disorders / Q000175:diagnosis / Q000178:diet therapy* / Q000523:psychology; D018592:Cross-Over Studies; D003866:Depressive Disorder / Q000175:diagnosis / Q000178:diet therapy* / Q000523:psychology; D004305:Dose-Response Relationship, Drug; D004311:Double-Blind Method; D005260:Female; D006801:Humans; D008297:Male; D014364:Tryptophan / Q000008:administration & dosage*; D055815:Young Adult
chemical_list: D014364:Tryptophan