Format

Send to

Choose Destination
See comment in PubMed Commons below
Am J Clin Nutr. 2014 Aug;100(2):567-76. doi: 10.3945/ajcn.114.090548. Epub 2014 Jun 25.

Increased fruit and vegetable intake has no discernible effect on weight loss: a systematic review and meta-analysis.

Author information

1
From the Office of Energetics, School of Public Health (KAK, AWB, and DBA), the Nutrition Obesity Research Center (KAK, AWB, MMBB, JMS, and DBA), the Department of Nutrition, School of Health Professions (MMBB), and the Division of Preventive Medicine, School of Medicine (JMS), University of Alabama at Birmingham, Birmingham, AL, and the Department of Nutrition Science, Purdue University, West Lafayette, IN (RDM).

Abstract

BACKGROUND:

A common dietary recommendation for weight loss, especially in lay public outlets, is to eat more fruit and vegetables (F/Vs). Without a compensatory reduction in total energy intake, significant weight loss would be unlikely.

OBJECTIVE:

We aimed to synthesize the best available evidence on the effectiveness of the general recommendation to eat more F/Vs for weight loss or the prevention of weight gain.

DESIGN:

We searched multiple databases for human randomized controlled trials that evaluated the effect of increased F/V intake on body weight. Inclusion criteria were as follows: ≥15 subjects/ treatment arm, ≥8-wk intervention, a stated primary or secondary outcome of body weight, the stated goal of the intervention was weight or fat loss or the prevention of weight or fat gain, and food intake provided or prescribed was of a variety of F/Vs that remained minimally processed.

RESULTS:

Two studies met all criteria; 5 other studies met all criteria but one. The primary analysis indicated an effect size of weight change (outcome of interest) from baseline [standardized mean difference (SMD) for studies that met all criteria] of -0.16 (95% CI: -0.78, 0.46) (P = 0.60). The SMD for 7 studies that met all or most criteria was 0.04 (95% CI: -0.10, 0.17) (P = 0.62).

CONCLUSIONS:

Studies to date do not support the proposition that recommendations to increase F/V intake or the home delivery or provision of F/Vs will cause weight loss. On the basis of the current evidence, recommending increased F/V consumption to treat or prevent obesity without explicitly combining this approach with efforts to reduce intake of other energy sources is unwarranted. This systematic review and meta-analysis was registered at http://www.crd.york.ac.uk/PROSPERO/ as CRD42013004688.

PMID:
24965308
PMCID:
PMC4095660
DOI:
10.3945/ajcn.114.090548
[Indexed for MEDLINE]
Free PMC Article
PubMed Commons home

PubMed Commons

0 comments
How to join PubMed Commons

    Supplemental Content

    Full text links

    Icon for HighWire Icon for PubMed Central
    Loading ...
    Support Center