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Dagens #fsvoversigt:
Systematic review and meta-analysis of the effect of increased vegetable and
fruit consumption on body weight and energy intake.
BMC Public Health. 2014;14:886
Authors: Mytton OT, Nnoaham K, Eyles H, Scarborough P, Ni Mhurchu C
Abstract
BACKGROUND: Increased vegetable and fruit consumption is encouraged to promote
health, including the maintenance of a healthy body weight. Population health
strategies (e.g. 5-A-Day or similar campaigns and subsidies on vegetables or
fruit) that emphasize increased consumption may theoretically lead to increased
energy intake and weight gain.
METHODS: We undertook a systematic review of trials that sought to increase
vegetable and fruit consumption, in the absence of advice or specific
encouragement to remove other foods from the diet, to understand the effect on
body weight and energy intake. We included only randomised controlled trials.
We pooled data using a random effects model for two outcomes: change in body
weight and change in energy intake. Sensitivity and secondary analyses were
also undertaken, including a one-study removed analysis and analysis by study
sub-type to explore sources of heterogeneity.
RESULTS: A total of eight studies, including 1026 participants, were identified
for inclusion in the review. The mean study duration was 14.7 weeks (range four
to 52 weeks). The mean difference in vegetable and fruit consumption between
arms was 133 g (range 50 g to 456 g). The mean change in body weight was 0.68
kg (95% CI: 0.15-1.20; n = 8; I2 for heterogeneity = 83%, p = 0.01) less in the
"high vegetable and fruit" intake arms than in the "low vegetable and fruit
intake" arms. There was no significant difference in measured change daily
energy intake between the two arms (368 kJ; 95% CI: -27 to 762, comparing high
vs low; n = 6; I2 = 42%, p = 0.07).
CONCLUSION: Promoting increased fruit and vegetable consumption, in the absence
of specific advice to decrease consumption of other foods, appears unlikely to
lead to weight gain in the short-term and may have a role in weight maintenance
or loss. Longer studies or other methods are needed to understand the long-term
effects on weight maintenance and loss.
PMID: 25168465 [PubMed - indexed for MEDLINE]
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Dette abstract er hentet via PubMed fra National Library of Medicine, USA
(http://www.ncbi.nlm.nih.gov/About/disclaimer.html).
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Se abstractet i PubMed: http://evidens.link/1iyvzif
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