Cited by 1,062Folate and B Vitamins ResearchBiochemical effects in animalsMetabolism and Genetic Disorders

Betaine in human nutrition

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Craig, Stuart AS·2004·The American Journal of Clinical Nutrition

Abstract

Betaine is distributed widely in animals, plants, and microorganisms, and rich dietary sources include seafood, especially marine invertebrates ( approximately 1%); wheat germ or bran ( approximately 1%); and spinach ( approximately 0.7%). The principal physiologic role of betaine is as an osmolyte and methyl donor (transmethylation). As an osmolyte, betaine protects cells, proteins, and enzymes from environmental stress (eg, low water, high salinity, or extreme temperature). As a methyl donor, betaine participates in the methionine cycle-primarily in the human liver and kidneys. Inadequate dietary intake of methyl groups leads to hypomethylation in many important pathways, including 1) disturbed hepatic protein (methionine) metabolism as determined by elevated plasma homocysteine concentrations and decreased S-adenosylmethionine concentrations, and 2) inadequate hepatic fat metabolism, which leads to steatosis (fatty accumulation) and subsequent plasma dyslipidemia. This alteration in liver metabolism may contribute to various diseases, including coronary, cerebral, hepatic, and vascular diseases. Betaine has been shown to protect internal organs, improve vascular risk factors, and enhance performance. Databases of betaine content in food are being developed for correlation with population health studies. The growing body of evidence shows that betaine is an important nutrient for the prevention of chronic disease.

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Crossref · 10.1093/ajcn/80.3.539

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Authors
Craig, S. A.
Corresponding author
Craig, Stuart AS
Venue
The American Journal of Clinical Nutrition
Publisher
Elsevier BV
Published
2004-11
Volume
80
Issue
3
Pages
539-549
ISSN
0002-9165 (ISSN-L)
OpenAlex
W1962867466
Cited by
1,062
References
265
Citations by year
2026: 46 · 2025: 55 · 2024: 65 · 2023: 57 · 2022: 63 · 2021: 81 · 2020: 95 · 2019: 62 · 2018: 62 · 2017: 53 · 2016: 68 · 2015: 59 · 2014: 46 · 2013: 44 · 2012: 44
FWCI
2.65
Type
journal article
Language
en
Open access
Locations
  • American Journal of Clinical Nutrition (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Health Sciences › Medicine › Rheumatology › Folate and B Vitamins Research
  • Health Sciences › Medicine › Physiology › Biochemical effects in animals
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Clinical Biochemistry › Metabolism and Genetic Disorders
Keywords
betaine, osmolytes, methyl donors, transmethylation, methionine cycle, homocysteine, S-adenosylmethionine, hepatic steatosis, dyslipidemia, food sources, seafood, wheat germ, spinach, chronic disease prevention, vascular risk factors
MeSH terms
Animals, Betaine, Cardiovascular Diseases, Gastrointestinal Agents, Humans, Intestinal Absorption, Kidney Diseases, Lipotropic Agents, Liver, Liver Diseases, Methionine, Methyltransferases, Osmolar Concentration, DNA Methylation, Hyperhomocysteinemia

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