HOME >> BIOLOGY >> NEWS
In male monkeys, too much soy has adverse effects

WINSTON-SALEM, N.C. While soy may be beneficial to women in a variety of ways, research in monkeys suggests that it could have an adverse effect on the behavior of men, according to researchers from Wake Forest University Baptist Medical Center.

Reporting in the current issue of the scientific journal Hormones and Behavior, the researchers found that in male monkeys, "long-term consumption of a diet rich in soy isoflavones can have marked influences on patterns of aggression and social behavior." Isoflavones are a naturally occurring plant estrogen in soy protein.

"Although considerable attention has been directed at the potentially beneficial effects of isoflavones in reducing the risk of various cancers, osteoporosis, cardiovascular disease and postmenopausal symptoms, less effort has been invested in characterizing neurobehavioral effects," according to the study.

People have the concept that soy is only beneficial, said Jay R. Kaplan, Ph.D., professor of comparative medicine and anthropology, one of the investigators. "There is the thought that what is good for some is good for all and more is better."

But this research points out that not only does the dose make a difference, but so does the sex of the consumer, Kaplan said, adding that the study is consistent with emerging literature showing that soy can have a negative impact on the behavior of male rodents. Previous studies have shown no difference in aggression in females given large doses of soy, Kaplan said.

The study was done over 15 months with adult male monkeys who were divided into three groups and fed different amounts and types of protein. One group had about 125 mg of isoflavones a day. The second group had half that amount, and the third group's protein came from milk and animal sources.

"In the monkeys fed the higher amounts of isoflavones, frequencies of intense aggressive and submissive behavior were elevated," according to the study. "In addition, the propo
'"/>

Contact: Karen Richardson
krchrdsn@wfubmc.edu
336-716-4587
Wake Forest University Baptist Medical Center
30-Apr-2004


Page: 1 2

Related biology news :

1. Vaccine controls AIDS in monkeys, researchers report in Science
2. Immunity gene predicts severe adverse drug reaction
3. Social stress adversely affects digestive function in subordinate cichlid fish
4. Ovarian stimulation in mice adversely affects embryo development and implantation
5. 9/11 search-and-rescue dogs exhibit few effects from exposure to disaster sites
6. Long-term effects of carbon monoxide poisoning are an autoimmune reaction
7. Marathoning mice could have Olympian effects on obesity
8. Iron can have negative side effects on people with kidney disease
9. Early dexamethasone exposure has long-term neurodevelopment, neuroendocrine effects
10. Manipulating biotope space can enhance beneficial biodiversity effects
11. The Mediterranean connection: ecological effects of El Nio in the Northern hemisphere

Post Your Comments:
*Name:
*Comment:
*Email:
TAG: male monkeys too much soy has adverse effects

(Date:10/14/2014)... – Like discriminating thieves, prostate cancer tumors scavenge and ... body. But such avarice may be a fatal weakness. ... way to kill prostate cancer cells by delivering a ... destroys the diseased cells brimming with the mineral, leaving ... two drugs already commercially available for other uses, could ...
(Date:10/14/2014)... years since T. rex took its last ... is breathing life back into dinosaurs using high-powered computer ... has important implications for how dinosaurs used their noses ... of smell and cool their brains. , "Dinosaurs ... Jason Bourke, lead author of the new study published ...
(Date:10/14/2014)... One of the planet,s leading questions is how to ... increasingly variable climate. The Food and Agriculture Organization of ... 70% over the next 40 years to feed a ... of the necessary rise in food production. Plants—grains, ... by supporting livestock. Current research must tap into ...
Breaking Biology News(10 mins):Prostate cancer's penchant for copper may be a fatal flaw 2Dinosaur breathing study shows that noses enhanced smelling and cooled brain 2Dinosaur breathing study shows that noses enhanced smelling and cooled brain 3Building a bridge from basic botany to applied agriculture 2Building a bridge from basic botany to applied agriculture 3
(Date:10/22/2014)... and HONG KONG , Oct. 22, ... therapeutics enterprise, announced today that rare disease expert ... vice president, research. Dr. McKew brings more than two ... positions at the National Institutes of Health, Wyeth Research ... Wyeth). Dr. McKew will lead aTyr,s efforts to expand and ...
(Date:10/20/2014)... 2014 /PRNewswire/ - BIOREM Inc. (TSXV: BRM) ("Biorem" or "the Company") ... orders to $5.8 million and provides a good start to Q4.  ... North America and one in the Middle ... at record levels," said Peter Bruijns , President & CEO. ... of Q3 than they have been for any complete year since ...
(Date:10/20/2014)... Rochelle, Virginia (PRWEB) October 20, 2014 ... of NDA Partners LLC, announced today that Ellen ... and legal support for the pharmaceutical industry, has ... and manager of its legal services practice. ... reports and expert witness and testimony, to top ...
(Date:10/19/2014)... The Asia-Pacific Bromine Market report defines and ... and forecast of revenue. , Browse through the ... to get an idea of the in-depth analysis ... segmentation in the Asia-Pacific bromine market, and is ... http://www.micromarketmonitor.com/market/asia-pacific-bromine-6741503144.html , Bromine is a volatile ...
Breaking Biology Technology:aTyr Pharma Appoints John C. McKew, Ph.D., as Vice President, Research 2aTyr Pharma Appoints John C. McKew, Ph.D., as Vice President, Research 3NDA Partners Appoints Ellen Teplitzky, JD as Director of its Legal Services Practice 2The Asia-Pacific Bromine Market is estimated to grow to $4,080.1 million by 2018 - New Report by MicroMarket Monitor 2The Asia-Pacific Bromine Market is estimated to grow to $4,080.1 million by 2018 - New Report by MicroMarket Monitor 3
Cached News: