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Diabetes Care. 2012 Jun;35(6):1293-300. doi: 10.2337/dc11-2388. Epub 2012 Apr 3.

A prospective study of the association between quantity and variety of fruit and vegetable intake and incident type 2 diabetes.

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  • 1MRCEpidemiology Unit, Institute of Metabolic Science, Addenbrooke’s Hospital, Cambridge, U.K.

Abstract

OBJECTIVE:

The association between quantity of fruit and vegetable (F&V) intake and risk of type 2 diabetes (T2D) is not clear, and the relationship with variety of intake is unknown. The current study examined the association of both quantity and variety of F&V intake and risk of T2D.

RESEARCH DESIGN AND METHODS:

We examined the 11-year incidence of T2D in relation to quantity and variety of fruit, vegetables, and combined F&V intake in a case-cohort study of 3,704 participants (n = 653 diabetes cases) nested within the European Prospective Investigation into Cancer and Nutrition-Norfolk study, who completed 7-day prospective food diaries. Variety of intake was derived from the total number of different items consumed in a 1-week period. Multivariable, Prentice-weighted Cox regression was used to estimate hazard ratios (HRs) and 95% CIs.

RESULTS:

A greater quantity of combined F&V intake was associated with 21% lower hazard of T2D (HR 0.79 [95% CI 0.62-1.00]) comparing extreme tertiles, in adjusted analyses including variety. Separately, quantity of vegetable intake (0.76 [0.60-0.97]), but not fruit, was inversely associated with T2D in adjusted analysis. Greater variety in fruit (0.70 [0.53-0.91]), vegetable (0.77 [0.61-0.98]), and combined F&V (0.61 [0.48-0.78]) intake was associated with a lower hazard of T2D, independent of known confounders and quantity of intake comparing extreme tertiles.

CONCLUSIONS:

These findings suggest that a diet characterized by a greater quantity of vegetables and a greater variety of both F&V intake is associated with a reduced risk of T2D.

PMID:
22474042
[PubMed - indexed for MEDLINE]
PMCID:
PMC3357245
Free PMC Article
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