Cited by 333Tryptophan and brain disordersAmino Acid Enzymes and MetabolismFatty Acid Research and Health

How important is tryptophan in human health?

Kałużna-Czaplińska, Joanna, Gątarek, Paulina, Chirumbolo, Salvatore, Chartrand, Max Stanley, Bjørklund, Geir·2019·Critical Reviews in Food Science and Nutrition

Abstract

Tryptophan (Trp) is an amino acid and an essential component of the human diet. It plays a crucial role in many metabolic functions. Clinicians can use Trp levels in the course of diagnosing various metabolic disorders and the symptoms associated with those diseases. Furthermore, supplementation with this amino acid is considered in the treatment of depression and sleep disorders, mainly due to the Trp relationship with the synthesis of serotonin (5-HT) and melatonin. It is also used in helping to resolve cognitive disorders, anxiety, or neurodegenerative diseases. Reduced secretion of serotonin is associated with autism spectrum disorder, obesity, anorexia and bulimia nervosa, and other diseases presenting peripherals symptoms. The literature strongly suggests that Trp has a significant role in the correct functionality of the brain-gut axis and immunology. This information leads to the consideration of Trp as an essential dietary component due to its role in the serotonin pathway. A reduced availability of Trp in diet and nutraceutical supplementation should be considered with greater concern than one might expect. This paper constitutes a review of the more salient aspects gleaned from the current knowledge base about the role of Trp in diseases, associated nutritional disorders, and food science, in general.

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Crossref · 10.1080/10408398.2017.1357534

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Authors
Kałużna-Czaplińska, J., Gątarek, P., Chirumbolo, S., Chartrand, M. S., & Bjørklund, G.
Affiliations
  • Department of Chemistry, Institute of General and Ecological Chemistry, Lodz University of Technology, Lodz, Poland
  • Lodz University of Technology (PL)
  • University of Verona (IT)
  • DigiCare Behavioral Research, Casa Grande, AZ, USA
  • Council for Nutritional and Environmental Medicine (NO)
Venue
Critical Reviews in Food Science and Nutrition
Published
2017-09
Volume
59
Issue
1
Pages
72-88
ISSN
  • 1040-8398 (ISSN-L)
  • 1549-7852
OpenAlex
W2743825815
Cited by
333
References
115
Citations by year
2026: 31 · 2025: 57 · 2024: 73 · 2023: 49 · 2022: 53 · 2021: 27 · 2020: 25 · 2019: 6 · 2018: 12
FWCI
0.79
Type
journal article
Language
en
Open access
closed
Locations
  • Critical Reviews in Food Science and Nutrition (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Neuroscience › Biological Psychiatry › Tryptophan and brain disorders
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Biochemistry › Amino Acid Enzymes and Metabolism
  • Health Sciences › Nursing › Nutrition and Dietetics › Fatty Acid Research and Health
Keywords
tryptophan, essential amino acids, serotonin synthesis, melatonin, depression, sleep disorders, autism spectrum disorder, obesity, eating disorders, gut-brain axis, neurodegenerative diseases, anxiety, nutraceutical supplementation, tryptophan deficiency, dietary intake
MeSH terms
Diet, Food Analysis, Humans, Serotonin, Tryptophan, Dietary Supplements

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