Fruit and vegetable intake and incidence of type 2 diabetes mellitus: systematic review and meta-analysis
- PMID: 20724400
- PMCID: PMC2924474
- DOI: 10.1136/bmj.c4229
Fruit and vegetable intake and incidence of type 2 diabetes mellitus: systematic review and meta-analysis
Abstract
Objective: To investigate the independent effects of intake of fruit and vegetables on incidence of type 2 diabetes.
Design: Systematic review and meta-analysis.
Data sources: Medline, Embase, CINAHL, British Nursing Index (BNI), and the Cochrane library were searched for medical subject headings and keywords on diabetes, prediabetes, fruit, and vegetables. Expert opinions were sought and reference lists of relevant articles checked.
Study selection: Prospective cohort studies with an independent measure of intake of fruit, vegetables, or fruit and vegetables and data on incidence of type 2 diabetes.
Results: Six studies met the inclusion criteria; four of these studies also provided separate information on the consumption of green leafy vegetables. Summary estimates showed that greater intake of green leafy vegetables was associated with a 14% (hazard ratio 0.86, 95% confidence interval 0.77 to 0.97) reduction in risk of type 2 diabetes (P=0.01). The summary estimates showed no significant benefits of increasing the consumption of vegetables, fruit, or fruit and vegetables combined.
Conclusion: Increasing daily intake of green leafy vegetables could significantly reduce the risk of type 2 diabetes and should be investigated further.
Conflict of interest statement
Competing interests: All authors have completed the Unified Competing Interest form at
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Comment in
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Can specific fruits and vegetables prevent diabetes?BMJ. 2010 Aug 18;341:c4395. doi: 10.1136/bmj.c4395. BMJ. 2010. PMID: 20724401 No abstract available.
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Vegetables and diabetes. Is nitrate the answer?BMJ. 2010 Sep 28;341:c5306. doi: 10.1136/bmj.c5306. BMJ. 2010. PMID: 20880918 No abstract available.
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[Significance of fruit and vegetable consumption in the rise of diabetes mellitus type 2].Praxis (Bern 1994). 2010 Dec 1;99(24):1512-3. doi: 10.1024/1661-8157/a000325. Praxis (Bern 1994). 2010. PMID: 21125537 German. No abstract available.
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Increased consumption of green leafy vegetables, but not fruit, vegetables or fruit and vegetables combined, is associated with reduced incidence of type 2 diabetes.Evid Based Med. 2011 Feb;16(1):27-8. doi: 10.1136/ebm1152. Epub 2011 Jan 11. Evid Based Med. 2011. PMID: 21224280 No abstract available.
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