Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Soy may help women's hearts if they start early

30.07.2014

A diet rich in soy may help feminine hearts, but timing matters, finds a new study published online today in Menopause, the journal of The North American Menopause Society.

Lifelong soy consumption, similar to the diet of women in Asia, produces the least atherosclerosis. Switching to a Western diet after menopause, similar to Asian migrants to North America, leads to just as much atherosclerosis as a lifelong Western diet, and switching to soy from a Western diet after menopause helps only if there isn't much atherosclerosis already.

Researchers at Wake Forest School of Medicine in Winston-Salem, NC, reached those conclusions based on their feeding study of cynomolgus monkeys before and after surgical menopause. They fed premenopausal monkeys a diet with protein derived mainly from animal sources or a diet with protein from high-isoflavone soybeans.

After having their ovaries removed, mimicking human menopause, one group of monkeys continued to eat a soy diet, another switched from animal protein to soy, a third group stuck with animal protein, and a fourth switched from animal protein to soy.

After 34 months, cholesterol levels were good in the monkeys who ate soy before and after menopause. And for those that switched to a soy protein diet after menopause, similar to some North American women concerned about their heart health, cholesterol levels did improve significantly (with lower total, LDL, and VLDL and higher HDL). But when it came to how much plaque progressed in the arteries, there weren't any statistically significant differences, despite trends favoring a lifelong soy diet and the switch to soy after menopause.

As far as the total amount of atherosclerosis was concerned, monkeys eating a lifelong soy diet showed a much lower proportion of complicated plaque in the arteries than the other monkeys.

There was a big advantage to a postmenopausal switch to soy for some of the monkeys, however. For those that had small plaques in the arteries at the time of menopause, the switch to soy after menopause markedly reduced the progression of plaque in the arteries.

These findings add to the similar ones from the Women's Isoflavone Soy Health (WISH) clinical trial on atherosclerosis in women after menopause, but this animal study was able to model what the effects of a soy diet or soy supplements may be, based on women's diets and heart health before menopause or very early after menopause, when artery plaques may still be small.

"This study underscores how important it is for women to get into the best cardiovascular shape they can before menopause. The healthy habits they start then will carry them through the years to come," says NAMS Executive Director Margery Gass, MD.

###

The article "Beneficial effects of soy supplementation on postmenopausal atherosclerosis are dependent on pretreatment stage of plaque progression," will be published in the March 2015 print edition of Menopause.

Founded in 1989, The North American Menopause Society (NAMS) is North America's leading nonprofit organization dedicated to promoting the health and quality of life of all women during midlife and beyond through an understanding of menopause and healthy aging. Its multidisciplinary membership of 2,000 leaders in the field—including clinical and basic science experts from medicine, nursing, sociology, psychology, nutrition, anthropology, epidemiology, pharmacy, and education—makes NAMS uniquely qualified to serve as the definitive resource for health professionals and the public for accurate, unbiased information about menopause and healthy aging. To learn more about NAMS, visit http://www.menopause.org.

Eileen Petridis | Eurek Alert!

Further reports about: Menopause NAMS Soy arteries atherosclerosis cholesterol healthy monkeys pretreatment

More articles from Health and Medicine:

nachricht New concept: Can Resuscitation be delayed?
31.03.2015 | Europäische Akademie Bozen - European Academy Bozen/Bolzano

nachricht For drivers with telescopic lenses, driving experience and training affect road test results
30.03.2015 | Wolters Kluwer Health

All articles from Health and Medicine >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Experiment Provides the Best Look Yet at 'Warm Dense Matter' at Cores of Giant Planets

In an experiment at the Department of Energy's SLAC National Accelerator Laboratory, scientists precisely measured the temperature and structure of aluminum as...

Im Focus: Energy-autonomous and wireless monitoring protects marine gearboxes

The IPH presents a solution at HANNOVER MESSE 2015 to make ship traffic more reliable while decreasing the maintenance costs at the same time. In cooperation with project partners, the research institute from Hannover, Germany, has developed a sensor system which continuously monitors the condition of the marine gearbox, thus preventing breakdowns. Special feature: the monitoring system works wirelessly and energy-autonomously. The required electrical power is generated where it is needed – directly at the sensor.

As well as cars need to be certified regularly (in Germany by the TÜV – Technical Inspection Association), ships need to be inspected – if the powertrain stops...

Im Focus: 3-D satellite, GPS earthquake maps isolate impacts in real time

Method produced by UI researcher could improve reaction time to deadly, expensive quakes

When an earthquake hits, the faster first responders can get to an impacted area, the more likely infrastructure--and lives--can be saved.

Im Focus: Atlantic Ocean overturning found to slow down already today

The Atlantic overturning is one of Earth’s most important heat transport systems, pumping warm water northwards and cold water southwards. Also known as the Gulf Stream system, it is responsible for the mild climate in northwestern Europe. 

Scientists now found evidence for a slowdown of the overturning – multiple lines of observation suggest that in recent decades, the current system has been...

Im Focus: Robot inspects concrete garage floors and bridge roadways for damage

Because they are regularly subjected to heavy vehicle traffic, emissions, moisture and salt, above- and underground parking garages, as well as bridges, frequently experience large areas of corrosion. Most inspection systems to date have only been capable of inspecting smaller surface areas.

From April 13 to April 17 at the Hannover Messe (hall 2, exhibit booth C16), engineers from the Fraunhofer Institute for Nondestructive Testing IZFP will be...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

World Conference On Regenerative Medicine 2015: Registration And Abstract Submission Now Open

25.03.2015 | Event News

University presidents from all over the world meet in Hamburg

19.03.2015 | Event News

10. CeBiTec Symposium zum Big Data-Problem

17.03.2015 | Event News

 
Latest News

Biology in a twist -- deciphering the origins of cell behavior

31.03.2015 | Life Sciences

Wrapping carbon nanotubes in polymers enhances their performance

31.03.2015 | Materials Sciences

Research Links Two Millennia of Cyclones, Floods, El Niño

31.03.2015 | Earth Sciences

VideoLinks
B2B-VideoLinks
More VideoLinks >>>