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:7/25/2014)... MA A study published online in the ... a novel approach to preventing cervical cancer based on ... cancer after removal of a discrete population of cells ... a study that looked at squamocolumnar junction cells, or ... and have been implicated as the origins of cervical ...
(Date:7/25/2014)... has opened the way for the development of new lines ... annual barley production is second only to wheat with 7-8 ... most important diseases of barley. , Senior Research Scientist Dr ... growths on the cell walls of barley plants that block ... research, by the ARC Centre of Excellence in Plant Cell ...
(Date:7/25/2014)... age girls reach puberty is influenced by ,imprinted genes,a subset ... the gene. This is the first evidence that imprinted ... details of this study were published today in the journal ... as menarche, is a marker for the timing of puberty ... menses varies between girls, is an inherited trait, and is ...
Breaking Biology News(10 mins):Clearing cells to prevent cervical cancer 2New hope for powdery mildew resistant barley 2Could age of first period influence development of diseases in older women? 2
(Date:7/24/2014)... July 24, 2014  Asterias Biotherapeutics, Inc. (OTCBB: ... field of regenerative medicine, announced today that it ... to investors on Tuesday, July 29, 2014, at ... will include an overview of Asterias, business strategy ... visit http://www.ustream.tv/channel/asterias-biotherapeutics at least 15 minutes ...
(Date:7/24/2014)... to materialise. Yet, scientists are making progress in ... One such approach relies on quantum dotsa kind ... electric field. A new study demonstrates that changing ... (TQDs) with electrical impulses can help better control ... be used as quantum information units, which would ...
(Date:7/24/2014)... -- Research and Markets has announced the ... Instruments Market 2014-2018" report to their offering. ... is the study of the gene and its functions ... functions of proteomes or sets of proteins by using ... the mapping of genes and DNA sequencing to understand ...
(Date:7/24/2014)... San Francisco, CA (PRWEB) July 24, 2014 ... Wednesday to be semi-finalists in Livestrong’s Big C Competition. ... Decisive Health are each headed to the semi-final round. ... in Livestrong’s exclusive three-month accelerator program, complete with mentoring ... country. , As part of the angelMD commitment ...
Breaking Biology Technology:Asterias Biotherapeutics Announces Live Investor Webcast 2Asterias Biotherapeutics Announces Live Investor Webcast 3Asterias Biotherapeutics Announces Live Investor Webcast 4Global Genomics and Proteomics Analytical Instruments Market 2014-2018: Key Vendors are Agilent, Bio-Rad , F. Hoffmann, La Roche, Illumina, PerkinElmer and Thermo Fisher Scientific 23 angelMD Startups Make Livestrong Big C Semi-finals 2
Cached News: