Category Archives: Testosterone Information

Reading Time: 2 minutesFebruary 15, 2012, 5:09 PM EST By Molly Peterson (Updates with comment from analyst in fifth paragraph.) Feb. 15 (Bloomberg) -- BioSante Pharmaceuticals Inc. rose 27 percent after the testosterone replacement therapy it developed for men won U.S. regulatory approval. BioSante gained 21 cents to close at 97 cents in New York. The U.S. Food and Drug Administration announced yesterday that it approved the transdermal gel, Bio-T-Gel. The product will be marketed by Teva Pharmaceutical Industries Ltd. of Petach Tikva, Israel, for men with low testosterone levels, a condition known as hypogonadism. BioSante estimates the market for male testosterone products … Read more »

Reading Time: < 1 minuteBy Zinta Lundborg - 2012-06-14T04:01:00Z In their models, economists often invoke the idea of rational self-interest. After years of experiments, neuroeconomist Paul Zak says that concept is bupkes when it comes to real people. In the lab, Zak has participants play a game in which the only way to make money is to give some of what you have to a stranger. He found consistently high levels of trust and trustworthiness. Whats at the root of this virtuous circle? Oxytocin. Zaks experiments show that the influence in the bloodstream of oxytocin, long known for its role in sexual reproduction, especially … Read more »

Reading Time: < 1 minuteBy Rita Rubin WebMD Health News Sept. 5, 2012 -- Dads who sleep in the same bed as their children may see a drop in their testosterone levels, a study shows. "This is the first study that's ever been done on this," says researcher Lee Gettler, PhD, an assistant research professor at Notre Dame. "No one before had ever asked the question as to whether co-sleeping affects men's physiology." The study is published in the journal PLoS One. It follows an earlier study that shows men's testosterone levels drop when they become fathers. Evidence from studies in animals suggests that … Read more »

Reading Time: 2 minutesQ: I AM a 61-year-old man in generally good health, but Ive been experiencing some worrying symptoms lately. I just dont seem to have the vigour I once had, I feel fatigued much of the time, as though my mind were in a fog, and my enthusiasm for work and recreation isnt what it once was. Could I be suffering from testosterone deficiency? If so, is testosterone replacement safe and effective at my age? What tests should I undergo? What are the risks of the therapy? A: You ask some important questions, ones I hear all the time from men … Read more »

Reading Time: 2 minutesQ: At age 29, I had to have a hysterectomy that included my ovaries. After the fat-stored estrogen left my body (producing horrid hot flashes), I complained to my OB-GYN about my missing libido. He wrote me a prescription for an estrogen and testosterone mix. I began taking the pills, but I had strange changes in my body. I developed acne, facial hair, body hair and a low voice. I even began to walk differently. It helped some with sex drive, but I felt less and less feminine and more masculine. I hated it. I don't think testosterone is worth … Read more »

Reading Time: 2 minutes(MENAFN - Khaleej Times) Scientists say they now have new evidence about why women live longer than men, from a study of historical data showing castrated Koreans far outlived their non-eunuch contemporaries. The study, published in the scientific journal "Current Biology," used detailed genealogical records of the Imperial nobility during Korea's Joseon dynasty, which spanned more than 500 years from the late 1300s to the early 1900s. According to the data, most men, including kings and royal family members, died in their late-40s or early-50s. But noble-class eunuchs - men who were castrated either by accident or because of social … Read more »

Reading Time: 2 minutesWashington, Feb 1 (ANI): Researchers have found that low testosterone levels occur five times more often among men who take long-acting instead of short-acting opioids for chronic pain. While it has been known that opioids cause low testosterone in men, this study is the first to show a significant difference in risk between short-acting (immediate release) and long-acting opioids. The 81 men in the retrospective study were between 26 and 79 years old (median age 51) and were seen in the chronic-pain clinic at Kaiser Permanente's Santa Rosa Medical Center (Calif.) between January 2009 and June 2010. All of the … Read more »

Reading Time: 2 minutesA testosterone test checks the level of this male hormone (androgen) in the blood. Testosterone affects sexual features and development. In men, it is made in large amounts by the testicles . In both men and women, testosterone is made in small amounts by the adrenal glands , and in women, by the ovaries . The pituitary gland controls the level of testosterone in the body. When the testosterone level is low, the pituitary gland releases a hormone called luteinizing hormone (LH). This hormone tells the testicles to make more testosterone. Before puberty, the testosterone level in boys is normally … Read more »

Reading Time: 2 minutesScienceDaily (May 10, 2012) 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. "Testosterone is a key hormone for the development of male reproductive organs, and it is also associated with behavioural traits, such as sexual behaviour and aggression," said lead author Dr. Richard E. Tremblay of the university's Research Unit on Children's Psychosocial Maladjustment. "Our study is the largest to be undertaken with newborns, and our results contrast with the … Read more »

Reading Time: 2 minutesApr. 3, 2013 Low testosterone levels may herald the subsequent development of rheumatoid arthritis in men, suggests research published online in the Annals of the Rheumatic Diseases. Sex hormones are thought to play a part in the development of rheumatoid arthritis, and both men and women with the condition tend to have lower levels of testosterone in their blood than healthy people. But it is not clear whether this is a contributory factor or a consequence of the disease. The researchers based their findings on participants of the Swedish Malmo Preventive Medicine Program (MPMP), which began in 1974 and tracked … Read more »

Reading Time: 2 minutesPublic release date: 20-Jul-2012 [ | E-mail | Share ] Contact: Andrew Gould andrew.gould@pcmd.ac.uk 44-188-438-346 The Peninsula College of Medicine and Dentistry A research study led by the Peninsula College of Medicine and Dentistry, University of Exeter, and Boston University School of Medicine, in collaboration with a global consortium, has identified genetic markers that influence a protein involved in regulating oestrogen 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 … Read more »

Reading Time: 2 minutesTUESDAY, May 28 (HealthDay News) -- After winning a team competition against strangers or rivals, men's testosterone levels increase. But when they're victorious against friends, their testosterone levels remain the same, according to a new study. This response during group competition is rooted in evolution and related to how humans form coalitions or alliances in warfare, the researchers said. "One interesting thing about humans is that we are the only animal that competes in teams," Mark Flinn, a professor of anthropology at the University of Missouri, said in a university news release. "Our hormonal reactions while competing are part of … Read more »

Reading Time: 2 minutesLondon, May 9 : Taking testosterone supplements may help older obese men in cutting their excess weight, researchers have suggested. In a study, hormone-deficient men were given testosterone supplements in a similar way to HRT for older women. Men lost an average of 16kg over five years when testosterone levels were increased back to normal. But experts warn that supplements may not be the answer due to possible risks of prostate cancer and heart disease, the BBC reported. "The notion that this is a quick fix for obese older men is, as always, simplistic. It is far more sensible and … Read more »

Reading Time: 2 minutesSep. 30, 2013 Boosting testosterone can promote generosity, but only when there is no threat of competition, according to new research published in Psychological Science, a journal of the Association for Psychological Science. The findings show that testosterone is implicated in behaviors that help to foster and maintain social relationships, indicating that its effects are more nuanced than previously thought. "Testosterone may mediate competitive and potentially antisocial behavior when social challenges or threats need to be confronted and handled," explains lead researcher Maarten Boksem of Rotterdam School of Management, Erasmus University (RSM) in the Netherlands. "But it can also induce … Read more »

Reading Time: < 1 minuteTestosterone thought to cause 'man flu' Men have a reputation for being sooks when it comes to winter colds and flu but researchers believe "man flu" really does exist and the culprit is testosterone. US and French scientists have found evidence that testosterone plays a key role in making men's immune responses more sluggish than women's. It has long been thought that women's immune systems are generally stronger and respond more quickly to infections and vaccinations than that of males, but the cause has been unknown. The new study blames testosterone for dampening the immune response, suggesting men with high … Read more »

Reading Time: < 1 minuteDUBLIN--(BUSINESS WIRE)-- Research and Markets (http://www.researchandmarkets.com/research/9hw4xq/global) has announced the addition of the "Global Testosterone Market 2012-2016" report to their offering. Global Testosterone market to grow at a CAGR of 26.26 percent over the period 2012-2016. One of the key factors contributing to this market growth is the increasing aging population across the globe. The Global Testosterone market has also been witnessing an increasing number of R&D activities that are focused on developing testosterone replacement therapies. However, the entry of generics could pose a challenge to the growth of this market. Further, the report states that one of the major challenges … Read more »

Reading Time: < 1 minute(WXYZ) - Consumer Reports has issues a serious warning about popular drug that more and more men are taking: testosterone. Drugmakers spent more than $100 million last year to promote prescription testosterone, everything from gels and patches to injections. Just two years ago, the industry was spending a fraction of thata mere $14 million dollars. Todays the ads appear to be working, as sales are soaring. Men worried about their sexual health are being bombarded by commercials promoting testosterone. But Consumer Reports' Dr. John Santa says that despite the fact that testosterone treatment sales topped $2 billion in 2012, most … Read more »

Reading Time: < 1 minuteWashington, Feb 20 (IANS) Male superiority over females in spatial navigation may just be a "side-effect" of testosterone, according to an analytical study. Previous studies have shown that women who take testosterone see an improvement in their spatial navigation skills, says Justin Rhodes, professor of psychology at the University of Illinois, who led the study. Some argue, for example, that males' slight, but significant, superiority in spatial navigation over females is probably "adaptive", meaning that during evolution, the trait gave males an advantage that led them to have more offspring than their peers, the journal Quarterly Review of Biology reports. … Read more »

Reading Time: 2 minutesTreatments purporting to offer "male rejuvenation" and combat the effects of aging have become popular in recent years, but such claims are not backed up by science, experts say. Men seeking such treatments often receive testosterone, sometimes in combination with other hormones such as including steroids and growth hormones. Advertisers claim the treatments increase strength and sex drive, and make patients feel younger. However, studies examining the effects these treatments are lacking, and there's little evidence to support their use in men who don't have hormone deficiencies, experts say. "There's really no scientific evidence that they will help a man … Read more »

Reading Time: < 1 minuteMen worried about their sexual health are being bombarded by commercials promoting testosterone. "Lost your appetite for romance and your mood is on its way down? You might not just be getting older, you might have a treatable condition called low testosterone, or low-T." "You should know that Axiron is here - the only underarm treatment for low-T. That's right, the one you apply to the underarm." Consumer Reports' Dr. John Santa says - despite the fact sales of testosterone treatments topped two-billion dollars in 2012 - most men don't need it. "Even if you're worried about erectile dysfunction, treatment … Read more »