Cited by 60Food composition and propertiesAntioxidant Activity and Oxidative StressPhytochemicals and Antioxidant Activities

Acute Effects of Dietary Glycemic Index on Antioxidant Capacity in a Nutrient‐controlled Feeding Study

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Botero, Diego, Ebbeling, Cara B., Blumberg, Jeffrey B., Ribaya‐Mercado, Judy D., Creager, Mark A., Swain, Janis F., Feldman, Henry A., Ludwig, David S.·2009·Obesity

Abstract

Oxidative stress, caused by an imbalance between antioxidant capacity and reactive oxygen species, may be an early event in a metabolic cascade elicited by a high glycemic index (GI) diet, ultimately increasing the risk for cardiovascular disease and diabetes. We conducted a feeding study to evaluate the acute effects of low‐GI compared with high‐GI diets on oxidative stress and cardiovascular disease risk factors. The crossover study comprised two 10‐day in‐patient admissions to a clinical research center. For the admissions, 12 overweight or obese (BMI: 27–45 kg/m 2) male subjects aged 18–35 years consumed low‐GI or high‐GI diets controlled for potentially confounding nutrients. On day 7, after an overnight fast and then during a 5‐h postprandial period, we assessed total antioxidant capacity (total and perchloric acid (PCA) protein‐precipitated plasma oxygen radical absorbance capacity (ORAC) assay) and oxidative stress status (urinary F 2α‐isoprostanes (F 2 IP)). On day 10, we measured cardiovascular disease risk factors. Under fasting conditions, total antioxidant capacity was significantly higher during the low‐GI vs. high‐GI diet based on total ORAC (11,736 ± 668 vs. 10,381 ± 612 µmol Trolox equivalents/l, P = 0.002) and PCA‐ORAC (1,276 ± 96 vs. 1,210 ± 96 µmol Trolox equivalents/l, P = 0.02). Area under the postprandial response curve also differed significantly between the two diets for total ORAC and PCA‐ORAC. No diet effects were observed for the other variables. Enhancement in plasma total antioxidant capacity occurs within 1 week on a low‐GI diet, before changes in other risk factors, raising the possibility that this phenomenon may mediate, at least in part, the previously reported effects of GI on health.

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Authors
Botero, D., Ebbeling, C. B., Blumberg, J. B., Ribaya‐Mercado, J. D., Creager, M. A., Swain, J. F., Feldman, H. A., & Ludwig, D. S.
Affiliations
  • Boston Children's Hospital (US)
  • Tufts University (US)
  • Brigham and Women's Hospital (US)
Corresponding author
Ludwig, David S.
Venue
Obesity
Publisher
Wiley
Published
2009-09
Volume
17
Issue
9
Pages
1664-1670
ISSN
  • 1930-7381 (ISSN-L)
  • 1930-739X
OpenAlex
W2057081268
Cited by
60
References
42
Citations by year
2026: 2 · 2025: 1 · 2024: 2 · 2023: 1 · 2022: 1 · 2020: 1 · 2019: 4 · 2018: 6 · 2017: 2 · 2016: 4 · 2015: 4 · 2014: 4 · 2013: 10 · 2012: 7
FWCI
5.68
Type
journal article
Language
en
Open access
Locations
  • Obesity (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • National Institutes of Health (5r01dk059240-04)
  • National Institute of Diabetes and Digestive and Kidney Diseases (R01DK59240, R01 DK059240, P30DK040561)
  • National Center for Research Resources (M01RR002635)
  • NIH Clinical Center
Topics
  • Health Sciences › Nursing › Nutrition and Dietetics › Food composition and properties
  • Health Sciences › Medicine › Biochemistry › Antioxidant Activity and Oxidative Stress
  • Health Sciences › Medicine › Biochemistry › Phytochemicals and Antioxidant Activities
Keywords
dietary glycemic index, low glycemic index diet, high glycemic index diet, antioxidant capacity, oxidative stress, reactive oxygen species, cardiovascular risk factors, F2-isoprostanes, urinary biomarkers, postprandial oxidative stress, overweight and obesity
MeSH terms
Adolescent, Adult, Antioxidants, Blood Glucose, Energy Intake, Cardiovascular Diseases, Dietary Carbohydrates, Fasting, Humans, Hyperglycemia, Insulin, Male, Obesity, Time Factors, Biomarkers, Oxidative Stress, Cross-Over Studies, Postprandial Period, F2-Isoprostanes, Glycemic Index, Diet, Carbohydrate-Restricted, Young Adult

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