Frequent red meat eaters at higher risk of stroke

Published: January 12, 2012
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A new study finds out that eating lots of red meat ups the likelihood of having a stroke while poultry lowers it. PHOTO: REUTERS

A new study finds out that eating lots of red meat ups the likelihood of having a stroke while poultry lowers it. PHOTO: REUTERS

A high-protein diet might benefit health in some ways, but depending on what kind of protein a person consumes, it could raise their stroke risk too, suggests a large new study that finds eating lots of red meat ups the likelihood of having a stroke while poultry lowers it.

“The main message from this paper is that the type of protein or the protein package is really important for the risk of stroke. We have to consider protein in the context of the foods,” said Dr. Frank Hu, a professor at the Harvard School of Public Health and one of the authors of the study.

He and his colleagues collected data from two massive health surveys that tracked tens of thousands of men and women from roughly middle age to their senior and elderly years.

Over 20-some years of the study, nearly 1,400 men and more than 2,600 women had a stroke.

Caused by a blood clot or a burst blood vessel that stops blood flow to the brain, stroke is the third most common cause of death in the United States. Twenty-six out of every 1,000 people in the U.S. have experienced a stroke, according to the Centers for Disease Control and Prevention, and about 800,000 die of stroke each year.

To see what influence different types of dietary protein have on stroke risk, the researchers divided up the people in the study based on how much red meat, poultry, fish, dairy and other sources of protein they typically ate each day.

Men who ate more than two servings of red meat each day — which was at the high end of the meat eaters — had a 28 percent increased risk of stroke compared to men who averaged about a third of a serving of red meat each day, the low end of the red meat eaters.

The researchers considered a serving of red meat as four to six ounces of beef or a hamburger patty.

Women who ate nearly two servings of red meat a day had a 19 percent higher risk of stroke than women who ate less than half a serving each day.

A 19 percent increase in stroke risk means that instead of 26 out of every 1,000 people having a stroke, 31 out of every 1,000 people would have one.

The researchers also looked at the change in stroke risk that would come with substituting different forms of protein for one daily serving of red meat: swapping in one serving a day of poultry lowered stroke risk by 27 percent, a serving of nuts or fish was linked to a 17 percent drop in risk and a serving of dairy dropped the risk by 10 to 11 percent.

Dr. Adam Bernstein, the lead author of the study and a researcher at the Cleveland Clinic, said he was not surprised to see that red meat eaters suffer more strokes.

“We’ve also done work on red meat and diabetes and red meat and coronary heart disease. So it makes sense that these cardio-metabolic diseases are grouped together,” Bernstein told Reuters Health.

An earlier study, led by Susanna Larsson at the Karolinska Institute in Stockholm, Sweden, also found that eating red meat had a link to stroke risk (see Reuters Health story of December 31, 2010).

What was new in the current study, Larsson said, was that frequent poultry eaters showed a lowered risk of stroke.

People who ate the most chicken or turkey each day — about a half serving for women and three-quarters of a serving for men — had a 13 percent reduced risk of stroke compared to those who ate barely more than a serving a day.

One serving was considered four ounces.

“I do not think that poultry has been considered as a protein source that might lower the risk of stroke. This is new,” Larsson told Reuters Health in an email.

Also surprising in the study was that fish seemed to offer no protection against stroke.

Larsson pointed out that earlier work has found fewer strokes among groups who eat fish often.

It’s possible that the benefits of fish depend on how it’s served, Bernstein said.

“There’s a lot of variation in how people cook and prepare fish, and we couldn’t get down to that level,” he said.

The researchers didn’t prove that beef is to blame for the increased number of strokes, but Bernstein said it could be that the fat and iron in red meat play a role.

Larsson said the findings support current recommendations to limit how much red meat people eat, and to opt for chicken and fish instead.

 

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Reader Comments (8)

  • Truth Teller
    Jan 12, 2012 - 1:57PM

    Boycott Meat Products!

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  • Jan 12, 2012 - 3:08PM

    I love beef – whatever you say

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  • sana
    Jan 12, 2012 - 3:43PM

    In this subcontinent a serving of red meat would probably entail one or two pieces floating in curry with a potato or in a whole load of rice. I guess this is a higher risk for the westerners where beef is served usually as a large piece of steak or in a more wholeseome manner.

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  • R S JOHAR
    Jan 12, 2012 - 3:56PM

    All meat products can be injurious to health since raw or live animals/chicks are not certified to be fit and free from diseases by doctors in India or Pakistan. As per survey, vegetarians are less prone to heart attacks, diabetes, kidney problems, obesity and many other ailments and live longer. I turned to be a vegetarian and teetottler sixteen years back and am fit and fine even crossing sixty.

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  • Truth From Pakistan
    Jan 12, 2012 - 7:12PM

    The idea is “Moderation”. Being an exclusive vegetarian is also extreme just like being totally “beefarian or meatarian”. Keep it well balanced and enjoy everything ! If being vegetarian was the secret of health, Humans would not have been given canines!

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  • Wahab
    Jan 12, 2012 - 8:43PM

    @Truth From Pakistan:

    More and more people in the west are turning to vegetarianism, simply because a vegetarian diet is clean, light and gives every protein and nutritioun that is needed by a human body. I also eat meat but during the last couple of years less and less. I can feel the difference. The body feels light, fresh and fit and not jaded.
    Regarding your canine joke.. on a lighter note you are lucky also that you did not get a tail!
    So dont make your own conlusions on what humans got and why!!!

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  • Jan 12, 2012 - 9:36PM

    @Wahab

    My friend it is not necessary. I have seen only two vegetarian in my life one is over-weight and one is under-weight. Morale is ..Be moderate..

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  • Ali Tanoli,
    Jan 13, 2012 - 12:19AM

    no meat no dish my friend this is my believe.

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