Cited by 81Nutritional Studies and DietDiet, Metabolism, and DiseaseDiet and metabolism studies

Macronutrient Intakes and Development of Type 2 Diabetes: A Systematic Review and Meta-Analysis of Cohort Studies

Alhazmi, Amani, Stojanovski, Elizabeth, McEvoy, Mark, Garg, Manohar L.·2012·Journal of the American College of Nutrition

Abstract

OBJECTIVE: To synthesize the best available evidence on the association between macronutrient intake and type 2 diabetes risk. DATA SOURCES: MEDLINE, EMBASE, CINAHL, Cochrane Library, ProQuest, Mednar, and the JBI Library of Systematic Reviews were searched up to July 2012 to identify published and unpublished studies. The review was restricted to human participants only but was not restricted by date or by language. STUDY ELIGIBILITY: Studies were included in the review if they were a cohort study examining the relationship between dietary macronutrient intake and type 2 diabetes risk, included healthy participants with no history of type 2 diabetes at the baseline assessment, and reported risk estimates (odds ratios, hazards ratios, or relative risks [RRs]) and corresponding 95% confidence intervals for type 2 diabetes risk by comparison of the highest with the lowest level of macronutrient consumption. METHODS: Data extraction and risk of bias assessments were performed in duplicate by 2 reviewers. Random-effects meta-analyses were performed to pool RR estimates from individual studies to assess the relationship between dietary macronutrient (carbohydrate, fat, protein, and macronutrient subtypes) intake and type 2 diabetes risk. Statistical heterogeneity was assessed using the I(2) statistic. Sensitivity analyses were performed to assess robustness of results, and publication bias was evaluated by the visual inspection of funnel plots and was formally assessed using Egger's test. RESULTS: Twenty-two relevant cohort studies were eligible for inclusion in this review. High intake of total dietary carbohydrate was associated with an increased type 2 diabetes risk (relative risk [RR] = 1.11, 95% confidence interval [CI]: 1.01 to 1.22, p = 0.035); however, this effect was not observed in an analysis stratified by gender. High vegetable fat intake was associated with a reduced type 2 diabetes risk in females (RR = 0.76, 95% CI: 0.68 to 0.85, p < 0.001). Other macronutrients were not significantly associated with type 2 diabetes risk. CONCLUSIONS AND IMPLICATIONS: The results of this systematic review and meta-analysis indicate that total carbohydrate is associated with an increased risk of type 2 diabetes; however, this effect was not observed in an analysis stratified by gender. High vegetable fat intake may decrease type 2 diabetes risk in females. There is a need for further well-designed prospective cohort studies to examine the potential association between macronutrient intake and type 2 diabetes risk.

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Crossref · 10.1080/07315724.2012.10720425

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Authors
Alhazmi, A., Stojanovski, E., McEvoy, M., & Garg, M. L.
Affiliations
University of Newcastle Australia (AU)
Corresponding author
Garg, Manohar L.
Venue
Journal of the American College of Nutrition
Published
2012-08
Volume
31
Issue
4
Pages
243-258
ISSN
  • 0731-5724 (ISSN-L)
  • 1541-1087
OpenAlex
W2060564918
Cited by
81
References
39
Citations by year
2026: 3 · 2025: 3 · 2024: 5 · 2023: 6 · 2022: 7 · 2021: 6 · 2020: 3 · 2019: 8 · 2018: 8 · 2017: 4 · 2016: 8 · 2015: 10 · 2014: 5 · 2013: 5
FWCI
1.00
Type
journal article
Language
en
Open access
closed
Locations
  • Journal of the American College of Nutrition (publishedVersion)
  • PubMed (publishedVersion)
  • NOVA (University of Newcastle Australia) (submittedVersion)
Topics
  • Health Sciences › Medicine › Public Health, Environmental and Occupational Health › Nutritional Studies and Diet
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Diet, Metabolism, and Disease
  • Health Sciences › Medicine › Physiology › Diet and metabolism studies
Keywords
type 2 diabetes, macronutrient intake, dietary carbohydrates, vegetable fats, dietary fat, dietary protein, sex differences, diabetes risk factors, dietary habits, healthy eating guidelines, Mediterranean diet, low-carbohydrate diet, low-fat diet, low-protein diet, dietary cholesterol, dietary sodium, dietary fiber intake, dietary fat intake, protein intake, carbohydrate intake
MeSH terms
Diabetes Mellitus, Type 2, Diet, Dietary Carbohydrates, Dietary Fats, Dietary Proteins, Female, Humans, Male, Risk Factors, Databases, Factual

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