Navigation Links
B Vitamins Might Lower Stroke Risk

But jury is still out on their value, experts note

THURSDAY, Feb. 19 (HealthDay News) -- People with heart disease who take high doses of B vitamins are somewhat less likely to suffer from stroke, especially if they're under 70, a new Canadian study suggests.

But other studies have come to opposite conclusions about whether vitamins really protect against cerebrovascular disease, noted Dr. Larry B. Goldstein, director of the Duke Stroke Center at Duke University, in Durham, N.C.

"We will need to carefully review this study in light of these other reports," said Goldstein. "There remains no evidence that general vitamin supplementation lowers risk of stroke or other cardiovascular events, and considerable evidence that it is ineffectual."

The Canadian researchers sought to determine whether high doses of three B vitamins could dampen the risk of stroke by lowering levels of an amino acid known as homocysteine.

Some research has linked high levels of the amino acid in the blood to a higher risk of stroke, although there's a debate over what this means.

The American Heart Association has made a point of not declaring high homocysteine levels to be a risk factor for heart disease or stroke. In fact, the association doesn't recommend the widespread use of B vitamin supplements to counteract any risk.

In the new study, researchers from the University of Toronto and McMaster University examined the results of a research trial that randomly assigned 5,522 adults with heart disease to either take a daily regimen of several vitamins or placebo pills for five years.

The vitamin regimen included a daily dose of 2.5 milligrams of folic acid (a type of B vitamin), 50 milligrams of vitamin B6 and 1 milligram of vitamin B12. These levels are higher than people would normally get from their diets or from multivitamins, said Lona Sandon, spokeswoman for the American Dietetic Association.

The findings were reported Thursday at the American Stroke Association's International Stroke Conference in San Diego.

Nearly 5 percent of the participants in the trial suffered from stroke during an average of five years of follow-up. The risk was lower in patients who followed the vitamin regimen, although the researchers described the difference as "modest."

The study's statistics suggest the vitamin therapy would help 13 out of 1,000 subjects avoid a stroke.

Several groups gained more benefit from the vitamin treatment: people younger than 70, those who had higher cholesterol and homocysteine levels at the start of the study, those from areas without folic acid fortification in food, and those who weren't receiving antiplatelet drugs (such as Plavix) or cholesterol-lowering statins at the start of the study.

The vitamin therapy didn't appear to have an effect on the severity of stroke that some of the participants suffered.

Another study presented at the same meeting found that taking recommended doses of B vitamins reduced homocysteine levels and lowered the chances of another stroke in stroke patients.

The University of California, Los Angeles, researchers collected demographic, clinical and laboratory data on more than 3,000 stroke patients at the start of the study and in follow-up visits of six, 12 and 24 months.

The vitamin group was less likely to have a recurrent stroke by the end of the two-year study (13.4 percent vs. 20.3 percent), the team found

Vitamins aside, experts said a healthy diet is the best way to guard against stroke.

"The best anti-stroke diet is high in vegetables and fruits, including high-fiber produce, low in saturated and trans fat, and higher in plant-based unsaturated fats [such as olive oil, unsalted nuts and avocado], with enough calcium, potassium and omega-3 fatty acids and at a calorie level that helps maintain a healthy weight," said Cynthia Sass, a registered dietitian in New York City.

And don't assume that you can reduce stroke risk by adding supplements to your diet for a few weeks, Sandon added.

"The benefits of vitamins and minerals are not a quick fix like prescription drugs," she said. "Vitamins and minerals must be taken in over several years to glean the benefits."

More information

Learn more about homocysteine from the American Heart Association.

SOURCES: Larry B. Goldstein, M.D., professor of medicine and director, Duke Stroke Center, Duke University Medical Center, Durham, N.C.; Lona Sandon, M.Ed., R.D., assistant professor, clinical nutrition, University of Texas Southwestern Medical Center at Dallas, and spokeswoman, American Dietetic Association; and Cynthia Sass, M.P.H., R.D., nutritionist, New York City; Feb. 18-19, 2009, presentations, American Stroke Association's International Stroke Conference, San Diego

Copyright©2009 ScoutNews,LLC.
All rights reserved  

Related medicine news :

1. Vitamins Do Older Women Little Good
2. Many Kids Dont Need the Vitamins Theyre Taking
3. Nanotech in your vitamins
4. Metametrix Introduces the New Fat-Soluble Vitamins Profile - A Snapshot of Overall Nutrition
5. Vitamins Fail to Prevent Cancer: Study
6. Selenium, Vitamins E and C Wont Prevent Prostate Cancer
7. Changing Times Vitamins to Sponsor Emmanuel Manny Pacquiao in Upcoming Fight With Oscar De La Hoya.
8. ClutchWave LLC Launches Price Shopping For Supplements and Vitamins
9. King Features Syndicate and Changing Times Vitamins Sign Licensing Agreement for Popeye(R) the Sailor Man in the Water Drink Category.
10. Two Antioxidant Vitamins Dont Protect Against Heart Disease
11. Can Vitamins and Minerals Prevent Hearing Loss?
Post Your Comments:
Related Image:
B Vitamins Might Lower Stroke Risk
(Date:12/1/2015)... ... December 01, 2015 , ... SAN FRANCISCO, Calif. ... that the organization has awarded Education and Developmental Therapies (EDT), an Applied Behavior ... award celebrates exceptional special needs providers that excel in synthesizing the areas of ...
(Date:12/1/2015)... ... December 01, 2015 , ... ... has been awarded a fixed price per sprint agile development contract to support ... $34 million over five years, provides software engineering, infrastructure, as well as operations ...
(Date:12/1/2015)... ... December 01, 2015 , ... ... for the care management and population health arenas, is pleased to announce that ... cost containment services, has successfully implemented the ACUITY Complete Care™ Management to back ...
(Date:12/1/2015)... ... December 01, 2015 , ... XTC Semifinals 2016 ... semi-finalists to head to Las Vegas for CES 2016, the world’s largest Consumer Electronic ... Consumer Technology Association Gary Shapiro, Founding Partner of Pacific Investments Veronica Serra, and venture ...
(Date:12/1/2015)... ... December 01, 2015 , ... With FCPX Overlay: Grit , ... control over customization, the possibilities are truly endless, all with a click of a ... position, vertical flip, horizontal flip, depth of field and more, all within Final Cut ...
Breaking Medicine News(10 mins):
(Date:12/1/2015)... , Dec. 01, 2015 ... the "Veterinary Equipment and Disposables Market by ... report to their offering. --> ... "Veterinary Equipment and Disposables Market by product, ... report to their offering. --> Research ...
(Date:12/1/2015)... 2015   MabVax Therapeutics Holdings, Inc . (OTCQB: ... has filed an Investigational New Drug Application (IND) with ... Company,s lead fully human antibody product HuMab 5B1 as ... to initiate the Phase I clinical trial early in ... The planned Phase I trial will evaluate the ...
(Date:12/1/2015)... BOSTON , Dec. 1, 2015  The ... (HCOs) to develop shared care plans that help ... These care plans will be digitally enabled, incorporate ... unique needs and desires. They will also allow ... a patient,s health journey is optimal. That is ...
Breaking Medicine Technology: