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Five daily portions of fruit and vegetables may be enough to lower risk of early death

Date:
July 29, 2014
Source:
BMJ-British Medical Journal
Summary:
Eating five daily portions of fruit and vegetables is associated with a lower risk of death from any cause, particularly from cardiovascular disease, but beyond five portions appears to have no further effect, finds a new study.

New research finds that eating five daily portions of fruit and vegetables is associated with a lower risk of death from any cause, particularly from cardiovascular disease, but beyond five portions appears to have no further effect.
Credit: monticellllo / Fotolia

Eating five daily portions of fruit and vegetables is associated with a lower risk of death from any cause, particularly from cardiovascular disease, but beyond five portions appears to have no further effect, finds a new study.

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These results conflict with a recent study published in BMJ's Journal of Epidemiology and Community Health suggesting that seven or more daily portions of fruits and vegetables were linked to lowest risk of death.

There is growing evidence that increasing fruit and vegetable consumption is related to a lower risk of death from cardiovascular disease and cancer. However, the results are not entirely consistent.

So a team of researchers based in China and the United States decided to examine the association between fruit and vegetable intake and risk of all-cause, cardiovascular, and cancer deaths.

They analysed the results of sixteen studies involving a total of 833,234 participants and 56,423 deaths. Differences in study design and quality were taken into account to minimise bias. Higher consumption of fruit and vegetables was significantly associated with a lower risk of death from all causes, particularly from cardiovascular diseases.

Average risk of death from all causes was reduced by 5% for each additional daily serving of fruit and vegetables, while risk of cardiovascular death was reduced by 4 percent for each additional daily serving of fruit and vegetables.

But the researchers identified a threshold around five servings per day, after which the risk of death did not reduce further.

In contrast, higher consumption of fruit and vegetables was not appreciably associated with risk of death from cancer. The researchers suggest that, as well as advice to eat adequate amounts of fruit and vegetables, the adverse effects of obesity, physical inactivity, smoking and high alcohol intake on cancer risk should be further emphasised.

The researchers say their study "provides further evidence that a higher consumption of fruits and vegetables is associated with a lower risk of mortality from all causes, particularly from cardiovascular diseases. The results support current recommendations to increase consumption of fruits and vegetables to promote health and longevity."


Story Source:

The above story is based on materials provided by BMJ-British Medical Journal. Note: Materials may be edited for content and length.


Journal Reference:

  1. X. Wang, Y. Ouyang, J. Liu, M. Zhu, G. Zhao, W. Bao, F. B. Hu. Fruit and vegetable consumption and mortality from all causes, cardiovascular disease, and cancer: systematic review and dose-response meta-analysis of prospective cohort studies. BMJ, 2014; 349 (jul29 3): g4490 DOI: 10.1136/bmj.g4490

Cite This Page:

BMJ-British Medical Journal. "Five daily portions of fruit and vegetables may be enough to lower risk of early death." ScienceDaily. ScienceDaily, 29 July 2014. <www.sciencedaily.com/releases/2014/07/140729224918.htm>.
BMJ-British Medical Journal. (2014, July 29). Five daily portions of fruit and vegetables may be enough to lower risk of early death. ScienceDaily. Retrieved January 30, 2015 from www.sciencedaily.com/releases/2014/07/140729224918.htm
BMJ-British Medical Journal. "Five daily portions of fruit and vegetables may be enough to lower risk of early death." ScienceDaily. www.sciencedaily.com/releases/2014/07/140729224918.htm (accessed January 30, 2015).

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