Subscribe to the BioNews newsletter for free

Login
Advanced Search

Search for
BioNews


Print Page Follow BioNews on Twitter BioNews RSS feed

Like the Progress Educational Trust on Facebook



King's College London - Health: More than a medical matter





Fruit and veg keeps genetic risk of heart disease at bay

17 October 2011

By Dr Rebecca Robey

Appeared in BioNews 629

Eating high quantities of fresh fruit and vegetables can counterbalance the effects of having a genetic predisposition to heart disease, an international study has found.

The research, led by scientists at McGill University and McMaster University, Canada, examined the incidence of heart attack (myocardial infarction) in individuals carrying four different high-risk variants of a region of DNA called 9p21. They then investigated how the risk was influenced by environmental factors such as smoking, physical activity and diet. They found that having a diet high in raw vegetables and fruit reduced the likelihood of heart attack in people who carried any one of the high-risk genetic variants.

Strikingly, for one of the genetic variants, rs2383206, the extra risk could be completely abolished by a vegetable-heavy diet. Carriers of rs2383206 who ate plenty of fruit and vegetables were no more likely to have a heart attack than individuals who did not carry any of the four high-risk genetic variants. Professor Sonia Anand, who led the team at McMaster University, commented: 'Our results support the public health recommendation to consume more than five servings of fruits or vegetables as a way to promote good health'.

The study had 8,114 participants from five ethnic groups (3,820 heart attack patients and 4,294 controls), selected from people enrolled in a huge global study on heart attack called INTERHEART. By examining participants' DNA, the researchers re-confirmed the increased risk of heart attack in carriers of any of the four genetic variants. Questionnaires were used to examine diet, smoking and physical activity. The team acknowledge that a limitation of the study is that self-reporting of lifestyle factors in this way can be prone to bias.

To support their findings, the researchers also analysed data from another large study into cardiovascular disease (CVD), the FINRISK study. This examined 19,129 Finnish individuals, including 1,014 cases of CVD, and found a similar relationship between genetic predisposition, diet and risk of CVD. However, this study looked at the prevalence of a different high-risk variant of 9p21; used a different questionnaire to investigate diet; and looked at CVD in general (of which heart attack is just one disorder). The two studies cannot, therefore be directly compared.

Judy O'Sullivan, senior cardiac nurse at the British Heart Foundation, said: 'This piece of research is certainly an interesting and useful insight into how our risk of developing heart disease is influenced by a number of factors. [...] The relationship between [lifestyle and genetics] is often very complicated and we don't yet have all the answers but the message appears to be very simple; eating lots of fruit and vegetables is great news for our heart health'.

 

RELATED ARTICLES FROM THE BIONEWS ARCHIVE

13 February 2012 - by Dr Zara Mahmoud 
A sixth of men have a genetic variant which could increase their risk of heart disease by up to 56 percent, according to a recent study... [Read More]

03 October 2011 - by Mehmet Fidanboylu 
Small fragments of genetic material from vegetables we eat could be altering our genes, according to a study carried out by scientists in China... [Read More]
15 June 2009 - by Dr Sarah Spain 
A diet rich in steak and other red meat might hinder a man's chances of conceiving a child, say Spanish researchers. According to their study published in the journal 'Fertility and Sterility', a healthy antioxidant-rich diet might be the key to sperm quality and motility. Men who eat a lot of fruit and vegetables, in particular peppers, spinach and citrus fruits, have higher quality and faster swimming sperm.... [Read More]
06 November 2007 - by Katy Sinclair 
A study by the Harvard School of Public Health (HSPH) has found that women have a reduced risk of infertility due to ovulatory disorders if they adopt a combination of healthy lifestyle and dietary measures. The study, published in Obstetrics and Gynecology, was based on 17,544 women... [Read More]

HAVE YOUR SAY
Be the first to have your say.

You need to Login or Register to add comments.

By posting a comment you agree to abide by the BioNews terms and conditions

 


 

- click here to enquire about using this story.

Printer Friendly Page

Published by the Progress Educational Trust
RISK ASSESSMENT:
BREAST CANCER, PREDICTION AND SCREENING
FREE public event in central London, 6.30pm on Thursday 8 May 2014 - find out more HERE

ANNIVERSARY APPEAL
Please donate HERE, so that the Progress Educational Trust can continue throughout 2014 (and beyond) while keeping BioNews FREE for you to read

The Progress Educational Trust was shortlisted for the Charity Times Awards 2011

Advertise your products and services HERE - click for further details

Good Fundraising Code

Become a Friend of PET HERE, and give the Progress Educational Trust a regular donation