http://www.physorg.com/ en-us Physorg.com internet news portal provides the latest news on science including: Physics, Nanotechnology, Life Sciences, Space Science, Earth Science, Environment, Health and Medicine. The natural compound xanthohumol blocks the effects of the male hormone testosterone, therefore aiding in the prevention of prostate cancer. http://www.physorg.com/news179522288.html Medicine & Health Tue, 08 Dec 2009 19:18:47 EST news179522288 New scientific evidence refutes the preconception that testosterone causes aggressive, egocentric, and risky behavior. A study at the Universities of Zurich and Royal Holloway London with more than 120 experimental subjects has shown that the sexual hormone with the poor reputation can encourage fair behaviors if this serves to ensure one's own status. http://www.physorg.com/news179504442.html Medicine & Health Tue, 08 Dec 2009 14:50:04 EST news179504442 Los Angeles Biomedical Research Institute at Harbor-UCLA Medical Center announced today that it will participate in a large national study of the effectiveness of testosterone as a treatment for anemia, cardiovascular disease, decreased vitality, impaired memory and sexual function, loss of muscle mass and other health conditions that affect older men. http://www.physorg.com/news177259306.html Medicine & Health Thu, 12 Nov 2009 15:10:02 EST news177259306 Postmenopausal women who have higher testosterone levels may be at greater risk of heart disease, insulin resistance and the metabolic syndrome compared to women with lower testosterone levels, according to a new study accepted for publication in The Endocrine Society's Journal of Clinical Endocrinology & Metabolism (JCEM). This new information is an important step, say researchers, in understanding the role that hormones play in women's health. http://www.physorg.com/news176525047.html Medicine & Health Wed, 04 Nov 2009 03:30:03 EST news176525047 (PhysOrg.com) -- Young men who voted for Republican John McCain or Libertarian candidate Robert Barr in the 2008 presidential election suffered an immediate drop in testosterone when the election results were announced, according to a study by researchers at Duke University and the University of Michigan. http://www.physorg.com/news175281081.html Medicine & Health Tue, 20 Oct 2009 18:11:47 EST news175281081 Territorial behavior in male mice might be linked to more "girl-power" than ever suspected, according to new findings at UCSF. For the first time, researchers have identified networks of nerve cells in the brain that are associated with how male mice defend their territory and have shown that these cells are controlled by the female hormone estrogen. http://www.physorg.com/news173618739.html Biology Thu, 01 Oct 2009 12:26:12 EST news173618739 The battle of the sexes rages on, this time from the trading floor. While there has long been debate about the social and biological differences between men and women, new research by the Kellogg School of Management at Northwestern University, the University of Chicago Booth School of Business and the University of Chicago's Department of Comparative Human Development explores how the hormone testosterone plays an important role in gender differences in financial risk aversion and career choice. http://www.physorg.com/news170347388.html Other Sciences Mon, 24 Aug 2009 16:30:01 EST news170347388 (PhysOrg.com) -- Like clockwork, brain regions in many songbird species expand and shrink seasonally in response to hormones. Now, for the first time, University of Washington neurobiologists have interrupted this natural "annual remodeling" of the brain and have shown that there is a direct link between the death of old neurons and their replacement by newly born ones in a living vertebrate. http://www.physorg.com/news169131844.html Medicine & Health Mon, 10 Aug 2009 14:04:36 EST news169131844 When humans and animals delay reproduction because food or other resources are scarce, they may live longer to increase the impact of reproduction, according to a new study by University of Minnesota researchers published in the June 25 issue of PLoS (Public Library of Science) One. http://www.physorg.com/news165147535.html Biology Thu, 25 Jun 2009 11:19:26 EST news165147535 Men with low testosterone should have their hormone levels retested after they fast overnight because eating may transiently lower testosterone levels, a new study concludes. http://www.physorg.com/news164164943.html Medicine & Health Sun, 14 Jun 2009 02:22:36 EST news164164943 (PhysOrg.com) -- Couples are being asked to replace their usual form of birth control with a new male contraceptive in a study to test its effectiveness. http://www.physorg.com/news162053568.html Medicine & Health Wed, 20 May 2009 15:53:40 EST news162053568 A protein that helps regulate expression of androgen receptors could prove a new focal point for staging and treating testosterone-fueled prostate cancer, Medical College of Georgia researchers say. http://www.physorg.com/news162043713.html Medicine & Health Wed, 20 May 2009 13:09:01 EST news162043713 (AP) -- A little testosterone might be good for adults, but it can cause serious harm to children, federal health officials warned Thursday. The Food and Drug Administration said adults using prescription testosterone gel must be extra careful not to get any of it on children to avoid causing serious side effects. http://www.physorg.com/news160932510.html Medicine & Health Thu, 07 May 2009 16:28:50 EST news160932510 A new longitudinal study of children's personality traits and interests tells us that sex-typed characteristics develop differently in girls and boys. The study, by researchers at The Pennsylvania State University, the University of Hawaii at Manoa, and Purdue University, appears in the March/April 2009 issue of the journal Child Development. http://www.physorg.com/news160213035.html Medicine & Health Wed, 29 Apr 2009 08:37:55 EST news160213035 Prostate cancer patients who undergo therapy to decrease testosterone levels increase their risk of developing bone- and heart-related side effects compared to patients who do not take these medications, according to a new analysis. Published in the June 1, 2009 issue of CANCER, a peer-reviewed journal of the American Cancer Society, the study indicates that preventive measures and careful scrutiny of patients' health can keep men from experiencing these potentially serious consequences. http://www.physorg.com/news160030200.html Medicine & Health Mon, 27 Apr 2009 05:50:31 EST news160030200 The combination therapy of vitamin E, selenium and soy does not prevent the progression from high-grade prostatic intraepithelial neoplasia (HGPIN) to prostate cancer, according to the new research presented at the 104th Annual Scientific Meeting of the American Urological Association (AUA). The study confirms the findings of the Selenium and Vitamin E Cancer Prevention Trial (SELECT) and expands knowledge of the affect soy has on prostate cancer. http://www.physorg.com/news159968096.html Medicine & Health Sun, 26 Apr 2009 12:35:41 EST news159968096 Current steroid (testosterone) doping tests should be scrapped for international sport, because they ignore vital ethnic differences in hormone activity, suggests research published ahead of print in the British Journal of Sports Medicine. http://www.physorg.com/news156060554.html Medicine & Health Thu, 12 Mar 2009 07:09:40 EST news156060554 A new testosterone patch, designed to pep up a woman's flagging sex drive after womb and ovary removal, may not work, and its long term safety is not proven, says Drug and Therapeutics Bulletin (DTB). http://www.physorg.com/news155282462.html Medicine & Health Tue, 03 Mar 2009 06:01:41 EST news155282462 More than 95 per cent of men who took degarelix for prostate cancer saw their testosterone levels fall dramatically as early as three days after they started treatment, according to a paper in the December issue of BJU International. http://www.physorg.com/news147529873.html Medicine & Health Wed, 03 Dec 2008 12:31:13 EST news147529873 Higher levels of testosterone are correlated with financial risk-taking behavior, according to a new study in which men's testosterone levels were assessed before participation in an investment game. The findings help to shed light on the evolutionary function and biological origins of risk taking. http://www.physorg.com/news141917336.html Biology Mon, 29 Sep 2008 14:28:56 EST news141917336 Women with higher levels of testosterone are more attracted to masculine looking men like celebrity beefcakes Russell Crowe and Daniel Craig. http://www.physorg.com/news140703687.html Medicine & Health Mon, 15 Sep 2008 13:21:27 EST news140703687 Young men with type 2 diabetes have significantly low levels of testosterone, endocrinologists at the University at Buffalo have found -- a condition that could have a critical effect on their quality of life and on their ability to father children. http://www.physorg.com/news139053296.html Medicine & Health Wed, 27 Aug 2008 10:54:56 EST news139053296 High levels of testosterone may be a key factor in spreading disease among mice, according to biologists. The findings could help explain why males in a population are often more likely to get infected, and transmit disease. http://www.physorg.com/news137391620.html Biology Fri, 08 Aug 2008 05:20:20 EST news137391620 Genes that control percentage of body fat are also responsible for circulating levels of testosterone in men, research published in the latest edition of Clinical Endocrinology shows. The research shows a 23% overlap between the genes that control testosterone and those that regulate body fat composition, suggesting that these two variables are partly controlled by the same set of genes. http://www.physorg.com/news137173251.html Medicine & Health Tue, 05 Aug 2008 16:40:51 EST news137173251