http://medicalxpress.com/ en-us Medical Xpress internet news portal provides the latest news on Health and Medicine. Prostate cancer is often considered an elderly man's disease, and little is known about the approximately 2% of cases that arise in men who are aged 50 years or younger. Research published in the February 11th issue of the Cell Press journal Cancer Cell uncovers the genetic origin of such early-onset prostate cancer. The findings could help in the development of new diagnostic, prognostic, therapeutic, and prevention strategies for the disease. http://medicalxpress.com/news/2013-02-genetic-root-early-onset-prostate-cancer.html Cancer Mon, 11 Feb 2013 12:00:05 EST news279803644 Low testosterone levels occur five times more often among men who take long-acting instead of short-acting opioids for chronic pain, according to a new Kaiser Permanente study published in The Clinical Journal of Pain. http://medicalxpress.com/news/2013-01-men-long-acting-chronic-pain-meds.html Medications Thu, 31 Jan 2013 16:21:57 EST news278871590 (HealthDay)—Very low testosterone levels impact total lipid oxidation but have no effect on the production of very-low-density lipoprotein-triglycerides (VLDL-TGs), according to a study published online Nov. 27 in Diabetes. http://medicalxpress.com/news/2012-12-testosterone-affect-total-lipid-oxidation.html Medical research Fri, 07 Dec 2012 11:40:01 EST news274099574 (HealthDay)—Men who have erectile dysfunction and low testosterone may get no extra benefit from adding the hormone to their Viagra prescription, a new study suggests. http://medicalxpress.com/news/2012-11-testosterone-gel-boost-viagra-effects.html Medical research Mon, 19 Nov 2012 17:13:06 EST news272567550 New findings led by Dr. Michael Lombardo, Prof. Simon Baron-Cohen and colleagues at the University of Cambridge indicate that testosterone levels early in fetal development influence later sensitivity of brain regions related to reward processing and affect an individual's susceptibility to engage in behavior, that in extremes, are related to several neuropsychiatric conditions that asymmetrically affect one sex more than the other. http://medicalxpress.com/news/2012-11-prenatal-testosterone-response-reward.html Psychology & Psychiatry Mon, 05 Nov 2012 11:15:40 EST news271336530 Men whose testosterone drops following radiation therapy for prostate cancer are more likely to experience a change in PSA levels that signals their cancer has returned, according to new research from Fox Chase Cancer Center. The findings will be presented on October 29 at the American Society for Radiation Oncology's 54th Annual Meeting. http://medicalxpress.com/news/2012-10-testosterone-tied-prostate-cancer-recurrence.html Cancer Sun, 28 Oct 2012 14:03:59 EST news270651769 A study by the University at Buffalo shows for the first time that obese males ages 14 to 20 have up to 50 percent less total testosterone than do normal males of the same age, significantly increasing their potential to be impotent and infertile as adults. http://medicalxpress.com/news/2012-10-obese-teen-boys-percent-testosterone.html Overweight and Obesity Tue, 16 Oct 2012 14:57:51 EST news269618264 (Medical Xpress)—A study by the University at Buffalo shows for the first time that obese males ages 14 to 20 have up to 50 percent less total testosterone than do normal males of the same age, significantly increasing their potential to be impotent and infertile as adults. http://medicalxpress.com/news/2012-10-obese-teen-males-impotent-infertile.html Overweight and Obesity Fri, 12 Oct 2012 07:12:00 EST news269244709 Testosterone is considered the male hormone, standing for aggression and posturing. Researchers around Prof. Dr. Armin Falk, an economist from the University of Bonn, have now been able to demonstrate that this sex hormone surprisingly also fosters social behavior. In play situations, subjects who had received testosterone clearly lied less frequently than individuals who had only received a placebo. The results have just been published in the Public Library of Science's journal PLoS ONE. http://medicalxpress.com/news/2012-10-testosterone-honesty-biological-background-lying.html Medical research Wed, 10 Oct 2012 17:00:27 EST news269106354 Closer sleeping proximity between fathers and children is associated with a greater decrease in the father's testosterone level, with possible implications for parenting behavior. The full report is published Sep. 5 in the open access journal PLOS ONE. http://medicalxpress.com/news/2012-09-fathers-closer-children-testosterone.html Medical research Wed, 05 Sep 2012 17:00:06 EST news266063854 Assessment of sexual function should be incorporated into cardiovascular risk evaluation for all men, regardless of the presence or absence of known cardiovascular disease, according to Dr. Ajay Nehra, lead author of a report by the Princeton Consensus (Expert Panel) Conference, a collaboration of 22 international, multispecialty researchers. Nehra is vice chairperson, professor and director of Men's Health in the Department of Urology at Rush University Medical Center in Chicago. http://medicalxpress.com/news/2012-08-cardiovascular-men-sexual-function.html Cardiology Thu, 30 Aug 2012 14:35:47 EST news265556136 Studies have shown that the offspring of mothers on a low-protein diet are more likely to develop hypertension as adults. Now, Drs. Gao, Yallampalli, and Yallampalli of the University of Texas Medical Branch at Galveston report that in rats, the high maternal testosterone levels associated with a low-protein diet are caused by reduced activity of an enzyme that inactivates testosterone, allowing more testosterone to reach the fetus and increase the offspring's susceptibility to adulthood hypertension. http://medicalxpress.com/news/2012-07-low-protein-diet-predisposes-offspring-adulthood.html Medical research Wed, 25 Jul 2012 15:00:01 EST news262439498 A research study led by Boston University School of Medicine (BUSM) and the University of Exeter in the United Kingdom, in collaboration with a global consortium, has identified genetic markers that influence a protein involved in regulating estrogen and testosterone levels in the bloodstream. The results, published online in PLoS Genetics, also reveal that some of the genetic markers for this protein are near genes related to liver function, metabolism and type 2 diabetes, demonstrating an important genetic connection between the metabolic and reproductive systems in men and women. http://medicalxpress.com/news/2012-07-genetic-markers-testosterone-estrogen.html Genetics Fri, 20 Jul 2012 10:58:06 EST news262000642 Researchers at King’s College London say ‘sex-testing’ policies introduced for athletes in time for the London Olympic Games this summer are significantly flawed and should be withdrawn. They say singling out hyperandrogenism in women from all other biological anomalies could discriminate against women who may not meet traditional notions of femininity and distort the scientific evidence on the relationship between testosterone, sex and athletic performance. http://medicalxpress.com/news/2012-07-sex-testing-flawed-withdrawn-experts.html Other Mon, 09 Jul 2012 08:40:04 EST news261041102 Weight loss can reduce the prevalence of low testosterone levels in overweight, middle-aged men with prediabetes by almost 50 percent, a new study finds. Results will be presented Monday at The Endocrine Society's 94th Annual Meeting in Houston. http://medicalxpress.com/news/2012-06-overweight-men-boost-testosterone-weight.html Overweight and Obesity Mon, 25 Jun 2012 13:20:04 EST news259847732 An experimental medication safely increases muscle strength and physical functioning among cancer patients with low testosterone levels, a new drug study finds. The results will be presented at The Endocrine Society's 94th Annual Meeting in Houston. http://medicalxpress.com/news/2012-06-experimental-drug-muscle-strength-male.html Medical research Mon, 25 Jun 2012 09:31:33 EST news259835471 A new study finds that a drop in testosterone levels over time is more likely to result from a man's behavioral and health changes than by aging. The study results will be presented Monday at The Endocrine Society's 94th Annual Meeting in Houston. http://medicalxpress.com/news/2012-06-declining-testosterone-men-aging.html Health Sat, 23 Jun 2012 13:10:01 EST news259674737 Proposed Olympic policies for testing the testosterone levels of select female athletes could discriminate against women who may not meet traditional notions of femininity and distort the scientific evidence on the relationship between testosterone, sex and athletic performance, says a Stanford University School of Medicine bioethicist and her colleagues. http://medicalxpress.com/news/2012-06-testosterone-female-olympians-scientists.html Other Wed, 13 Jun 2012 17:30:10 EST news258827401 (Medical Xpress) -- Testosterone prescriptions have surged since 2006 due to promotional activity, according to University of Sydney research which also found growing overuse in older men. http://medicalxpress.com/news/2012-06-testosterone-overprescribed-older-men.html Medical research Mon, 04 Jun 2012 06:52:06 EST news258011455 Many men with metastatic, hormone-sensitive prostate cancer live longer on continuous androgen-deprivation therapy (also known as hormone therapy) than on intermittent therapy, according to a seventeen-year study led by SWOG, a cancer research cooperative group funded by the National Cancer Institute (NCI). http://medicalxpress.com/news/2012-06-intermittent-hormone-therapy-prostate-cancer.html Cancer Sun, 03 Jun 2012 05:56:11 EST news257921670 By comparing the testosterone levels of five-month old pairs of twins, both identical and non-identical, University of Montreal researchers were able to establish that testosterone levels in infancy are not inherited genetically but rather determined by environmental factors. http://medicalxpress.com/news/2012-05-testosterone-fuelled-infantile-males-product-mom.html Psychology & Psychiatry Thu, 10 May 2012 04:43:23 EST news255843709 (HealthDay) -- Older obese men with low levels of testosterone can lose weight when levels of the male hormone are restored to normal, a new study suggests. http://medicalxpress.com/news/2012-05-testosterone-therapy-obese-men-weight.html Health Wed, 09 May 2012 11:42:25 EST news255782539 Low levels of testosterone in men could increase their risk of developing diabetes, a study suggests. http://medicalxpress.com/news/2012-05-testosterone-diabetes-men.html Medical research Fri, 04 May 2012 10:50:06 EST news255345381 Soccer fans' testosterone and cortisol levels go up when watching a game, but don't further increase after a victory, according to a study published Apr. 18 in the open access journal PLoS ONE. http://medicalxpress.com/news/2012-04-hormone-higher-soccer-fans-game.html Medical research Wed, 18 Apr 2012 17:00:05 EST news253981831 Men experience a marked drop in their testosterone levels when taking a targeted therapy to control a specific type of lung cancer. That's according to a University of Colorado Cancer Center study published in the April issue of Cancer, the official journal of the American Cancer Society. http://medicalxpress.com/news/2012-04-clinical-insight-treatment-lung-cancer.html Cancer Wed, 04 Apr 2012 18:26:34 EST news252782785 A middle-aged man goes to see his doctor, complaining of a host of vague symptoms: He's lethargic, somewhat depressed and feeling a little anxious about his manliness. http://medicalxpress.com/news/2012-03-reality.html Sleep apnea Mon, 12 Mar 2012 12:20:01 EST news250772176 New research by Australian scientists reveals that males who are exposed to high levels of testosterone before birth are twice as likely to experience delays in language development compared to females. The research, published in Journal of Child Psychology and Psychiatry, focused on umbilical cord blood to explore the presence of testosterone when the language-related regions of a fetus' brain are undergoing a critical period of growth. http://medicalxpress.com/news/2012-01-prenatal-testosterone-linked-language-male.html Psychology & Psychiatry Thu, 26 Jan 2012 04:17:06 EST news246773797 A recent study accepted for publication in The Endocrine Society's Journal of Clinical Endocrinology & Metabolism (JCEM) found that higher levels of testosterone were associated with reduced loss of lean muscle mass in older men, especially in those who were losing weight. In these men, higher testosterone levels were also associated with less loss of lower body strength. http://medicalxpress.com/news/2011-10-older-men-higher-testosterone-muscle.html Medical research Thu, 27 Oct 2011 07:59:17 EST news238921150 A new study of older Western Australian men has revealed that testosterone might not be the fountain of youth. http://medicalxpress.com/news/2011-10-refutes-testosterone-fountain-youth.html Medical research Fri, 21 Oct 2011 11:19:14 EST news238414673 (Medical Xpress) -- A new study published in the Journal of the American College of Cardiology reports that higher natural levels of testosterone in elderly men may reduce their risk of a heart attack or stroke. http://medicalxpress.com/news/2011-10-high-testosterone-heart-tied.html Cardiology Thu, 06 Oct 2011 11:41:06 EST news237120048