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

More than '5 a day' appears to have no further effect, say researchers

2014-07-30

(Press-News.org) 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."

INFORMATION:

ELSE PRESS RELEASES FROM THIS DATE:

A blood test could help prevent neural tube birth defects

2014-07-30

Folate is a naturally occurring form of vitamin B found in food, while folic acid is synthetically produced and used in fortified foods and supplements. It is well known that taking folic acid before and during early pregnancy reduces the risk of neural tube defects like spina bifida. The current recommended dose is 400 ìg (micrograms) a day, but it is still not clear exactly how much daily folic acid is needed to prevent neural tube defects. A previous study carried out in Ireland showed the risk of a having a child with a neural tube defect increased as red blood ...

Why we should vaccinate boys against HPV as well as girls

2014-07-30

Gillian Prue, from the School of Nursing and Midwifery at Queen's University of Belfast, says that the human papillomavirus (HPV) infection is common in men and can lead to genital warts and the development of some head and neck, anal or penile cancers. She says incidence of this has increased in the past two decades with HPV causing 5% of all human cancers. Since September 2008 a free vaccination has been available for 12-13 year old girls in the UK with a catch up programme for girls up to age 18. Australia, the US, Austria and parts of Canada have introduced a vaccination ...

Problem drinking in midlife doubles chance of memory problems in later life

2014-07-30

A study published today [Weds July 30] in the American Journal of Geriatric Psychiatry indicates that middle-aged adults with a history of problem drinking are more than twice as likely to suffer from severe memory impairment in later life. The study highlights the hitherto largely unknown link between harmful patterns of alcohol consumption and problems with memory later in life – problems which may place people at a high risk of developing dementia. The study was carried out by researchers from the University of Exeter Medical School with support from the NIHR Collaboration ...

Maternal obesity modulates offspring microflora composition and gastrointestinal functions

2014-07-30

7/29/2014, Seattle, WA. Research to be presented at the Annual Meeting of the Society for the Study of Ingestive Behavior (SSIB), the foremost society for research into all aspects of eating and drinking behavior, finds that maternal obesity leads to marked changes in the offspring's gastrointestinal microflora composition and gastrointestinal function. The gastrointestinal microflora consists of multiple species of microorganisms that live in the digestive tracts of animals and assists the host in digestion. An imbalance in an individual's microflora is suspected to ...

Is hunger suppression the key to reducing risk of overeating and obesity?

2014-07-30

The failure of some obese individuals to generate or detect adequate signals to stop eating has been frequently been reported in medical science. Researchers at the University of Leeds, UK have devised a simple metric to quantify satiety responsiveness - Satiety Quotient (SQ) – and are applying it to their research to find out why some people struggle to manage their weight and whether certain foods may help to amplify sensations of fullness. In an experiment at the University of Leeds, researchers used the SQ in conjunction with different amounts of whole raw almonds ...

Blood sugar levels closely linked to how our brains respond to the sight of food, twin study finds

2014-07-30

7/29/2014, Seattle, WA. Our brain's response to the sight of food appears to be driven more by how low our blood sugar level is at the moment than our upbringing or genetics, researchers said at the annual meeting of the Society for the Study of Ingestive Behavior. "The finding suggest our brains have a way to override our genetic inheritance, upbringing and habits to respond to our immediate nutritional needs," said Dr. Ellen Schur, associate professor of medicine at the University of Washington. In the study, Schur and UW Medicine colleagues at Harborview Medical Center, ...

Drinking sugar-sweetened beverages during adolescence impairs memory

2014-07-30

7/29/2014, Seattle, WA. Research to be presented at the Annual Meeting of the Society for the Study of Ingestive Behavior (SSIB), the foremost society for research into all aspects of eating and drinking behavior, finds that daily consumption of beverages sweetened with high-fructose corn syrup or sucrose can impair the ability to learn and remember information, particularly when consumption occurs during adolescence. Both adult and adolescent rats were given daily access to sugar-sweetened beverages that mirror sugar concentrations found in common soft drinks. Adult rats ...

Secular and longitudinal trends in dieting strategies in young adult women from 1982 to 2012

2014-07-30

7/29/2014, Seattle, WA. Research to be presented at the Annual Meeting of the Society for the Study of Ingestive Behavior (SSIB), the foremost society for research into all aspects of eating and drinking behaviors, finds that the younger a woman is when she goes on her first diet, the more likely she is to experience several negative health outcomes later in life. Dieting is very common among girls and young women; however, people often fail to consider the long-term consequences of weight-loss diets, particularly in those who begin dieting at a young age. A team led ...

Striatal dopamine transporter binding correlates with body composition and visual attention bias for food cues in healthy young men

2014-07-30

7/29/2014, Seattle, WA. Research to be presented at the Annual Meeting of the Society for the Study of Ingestive Behavior (SSIB), the foremost society for research into all aspects of eating and drinking behavior, describes a way that brain chemistry may make some people notice food more easily, which can tempt overeating even in people who are not overweight. Dopamine activity in the striatum, an area of the brain sensitive to food reward, was linked to how quickly men noticed a food picture hidden among neutral pictures. In turn, the men who quickly noticed food pictures ...

Parents' reported food preparation time is inversely associated with energy density

2014-07-30

7/29/2014, Seatle, WA. Research to be presented at the Annual Meeting of the Society for the Study of Ingestive Behavior (SSIB), the foremost society for research into all aspects of eating and drinking behavior, suggests that the amount time parents spend on food preparation at home influences children's food intake decisions made in the laboratory without parental supervision. "In general, research shows that children tend to eat inadequate amounts of nutrient-rich foods while eating large amounts of sugary and fatty foods," Shehan said. "It's encouraging to see that ...

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

ELSE PRESS RELEASES FROM THIS DATE:

LAST 30 PRESS RELEASES: