Cited by 154Antioxidant Activity and Oxidative StressFood composition and propertiesNutritional Studies and Diet

Relations of glycemic index and glycemic load with plasma oxidative stress markers

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Hu, Youqing, Block, Gladys, Norkus, Edward P, Morrow, Jason D, Dietrich, Marion, Hudes, Mark·2006·The American Journal of Clinical Nutrition

Abstract

Background Recent data suggest that acute hyperglycemia may increase in vivo free radical production. This increased production has been implicated in many disease processes.Objective The objective was to investigate whether a diet with a high glycemic index (GI) or glycemic load (GL) is associated with greater oxidative stress as measured by 2 lipid peroxidation markers, malondialdehyde (MDA) and F2-isoprostanes (IsoPs).Design Plasma MDA and IsoP concentrations were measured in 292 healthy adults, and dietary GI and GL were assessed by using a validated food-frequency questionnaire. Cross-sectional associations between GI, GL, and the 2 markers were examined by using multiple regression techniques with adjustment for potential confounding variables.Results Dietary GI was positively associated with both plasma MDA and IsoPs. The mean multivariate-adjusted MDA concentrations increased from 0.55 to 0.73 micromol/L as GI increased from the lowest to the highest quartile (P for trend = 0.02); the corresponding IsoP concentrations increased from 0.034 to 0.040 ng/mL (P for trend = 0.03). GL was positively associated with both MDA and IsoPs, but the linear relation was significant only for MDA. In addition, a marginally significant interaction between overall GI and body mass index (BMI; in kg/m2) for plasma MDA was observed (P = 0.09). The positive association between overall GI and MDA was stronger in those with a BMI < 26.5 than for those with a BMI > or = 26.5.Conclusions Chronic consumption of high-GI foods may lead to chronically high oxidative stress. A low-GI diet, not a low-carbohydrate diet, appears to be beneficial in reducing oxidative stress.

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Crossref · 10.1093/ajcn/84.1.70

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Authors
Hu, Y., Block, G., Norkus, E. P., Morrow, J. D., Dietrich, M., & Hudes, M.
Affiliations
Tufts University (US)
Corresponding author
Block, Gladys
Venue
The American Journal of Clinical Nutrition
Publisher
Elsevier BV
Published
2006-07
Volume
84
Issue
1
Pages
70-76
ISSN
0002-9165 (ISSN-L)
OpenAlex
W1895811286
Cited by
154
References
42
Citations by year
2026: 7 · 2025: 6 · 2024: 8 · 2023: 6 · 2022: 4 · 2021: 6 · 2020: 8 · 2019: 9 · 2018: 6 · 2017: 7 · 2016: 8 · 2015: 5 · 2014: 11 · 2013: 6 · 2012: 14
FWCI
5.84
Type
journal article
Language
en
Open access
Locations
  • American Journal of Clinical Nutrition (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Institute on Drug Abuse (DA9561)
  • National Institute of Environmental Health Sciences (P30ES001896, P30-ES01896)
Topics
  • Health Sciences › Medicine › Biochemistry › Antioxidant Activity and Oxidative Stress
  • Health Sciences › Nursing › Nutrition and Dietetics › Food composition and properties
  • Health Sciences › Medicine › Public Health, Environmental and Occupational Health › Nutritional Studies and Diet
Keywords
glycemic index, glycemic load, oxidative stress, lipid peroxidation, malondialdehyde, F2-isoprostanes, free radical generation, hyperglycemia, body mass index, low glycemic index diet
MeSH terms
Adolescent, Adult, Aged, Cross-Sectional Studies, Dietary Carbohydrates, Dose-Response Relationship, Drug, Female, Humans, Male, Malondialdehyde, Middle Aged, Surveys and Questionnaires, Regression Analysis, Smoking, Tobacco Smoke Pollution, Lipid Peroxidation, Cohort Studies, Body Mass Index, Multivariate Analysis, Oxidative Stress, F2-Isoprostanes, Glycemic Index

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