Go to JCI Insight
  • About
  • Editors
  • Consulting Editors
  • For authors
  • Publication ethics
  • Publication alerts by email
  • Advertising
  • Job board
  • Contact
  • Clinical Research and Public Health
  • Current issue
  • Past issues
  • By specialty
    • COVID-19
    • Cardiology
    • Gastroenterology
    • Immunology
    • Metabolism
    • Nephrology
    • Neuroscience
    • Oncology
    • Pulmonology
    • Vascular biology
    • All ...
  • Videos
    • Conversations with Giants in Medicine
    • Video Abstracts
  • Reviews
    • View all reviews ...
    • Complement Biology and Therapeutics (May 2025)
    • Evolving insights into MASLD and MASH pathogenesis and treatment (Apr 2025)
    • Microbiome in Health and Disease (Feb 2025)
    • Substance Use Disorders (Oct 2024)
    • Clonal Hematopoiesis (Oct 2024)
    • Sex Differences in Medicine (Sep 2024)
    • Vascular Malformations (Apr 2024)
    • View all review series ...
  • Viewpoint
  • Collections
    • In-Press Preview
    • Clinical Research and Public Health
    • Research Letters
    • Letters to the Editor
    • Editorials
    • Commentaries
    • Editor's notes
    • Reviews
    • Viewpoints
    • 100th anniversary
    • Top read articles

  • Current issue
  • Past issues
  • Specialties
  • Reviews
  • Review series
  • Conversations with Giants in Medicine
  • Video Abstracts
  • In-Press Preview
  • Clinical Research and Public Health
  • Research Letters
  • Letters to the Editor
  • Editorials
  • Commentaries
  • Editor's notes
  • Reviews
  • Viewpoints
  • 100th anniversary
  • Top read articles
  • About
  • Editors
  • Consulting Editors
  • For authors
  • Publication ethics
  • Publication alerts by email
  • Advertising
  • Job board
  • Contact
Fructose metabolism and metabolic disease
Sarah A. Hannou, … , Nicola M. McKeown, Mark A. Herman
Sarah A. Hannou, … , Nicola M. McKeown, Mark A. Herman
Published February 1, 2018
Citation Information: J Clin Invest. 2018;128(2):545-555. https://doi.org/10.1172/JCI96702.
View: Text | PDF
Review

Fructose metabolism and metabolic disease

  • Text
  • PDF
Abstract

Increased sugar consumption is increasingly considered to be a contributor to the worldwide epidemics of obesity and diabetes and their associated cardiometabolic risks. As a result of its unique metabolic properties, the fructose component of sugar may be particularly harmful. Diets high in fructose can rapidly produce all of the key features of the metabolic syndrome. Here we review the biology of fructose metabolism as well as potential mechanisms by which excessive fructose consumption may contribute to cardiometabolic disease.

Authors

Sarah A. Hannou, Danielle E. Haslam, Nicola M. McKeown, Mark A. Herman

×

Figure 1

Fructose biochemistry.

Options: View larger image (or click on image) Download as PowerPoint
Fructose biochemistry.
Upon entering hepatocytes, fructose is phosphoryl...
Upon entering hepatocytes, fructose is phosphorylated by KHK to F1P. F1P is cleaved to DHAP and glyceraldehyde by ALDOB. Glyceraldehyde is phosphorylated by triose-kinase (TKFC, also known as dihydroxyacetone kinase 2 or DAK) to form the glycolytic intermediate glyceraldehyde 3-phosphate (GA3P). Both fructose-derived DHAP and GA3P enter the glycolytic/gluconeogenic metabolite pool at the triose-phosphate level, and these metabolites have numerous metabolic fates. F1P also allosterically regulates metabolic enzymes (red and green lines) to regulate the disposition of fructose-derived substrate and other metabolic products like uric acid. AMPD3, adenosine deaminase; GA, glyceraldehyde; IMP, inosine monophosphate; MTTP, microsomal triglyceride transfer protein; PYGL, glycogen phosphorylase L; GYS2, glycogen synthase 2; PKLR, pyruvate kinase, liver and red blood cell; PEP, phosphoenolpyruvate; TAG, triacylglycerol.

Copyright © 2025 American Society for Clinical Investigation
ISSN: 0021-9738 (print), 1558-8238 (online)

Sign up for email alerts