A Little Bit of Color Turns Barn Swallows into Macho Males
	By darkening the breast feathers of male New Jersey barn swallows with a common marker, researchers from the Arizona State University showed that birds with naturally darker feathers attract more females than birds with lighter feather coloring. The experiment further proved that dark feathers can also boost the testosterone levels and may even help the birds lose weight. In a previous study carried out three years ago by the same team, it ... [read more >>]
	04 June 2008, 06:34GMT | (c) 2008 Softpedia

Estrogen Has the Same Effect in Women like Testosterone in Men
	Do you think that only testosterone induces the drive for power and aggressive behavior? Wrong! A new research published in the Hormones and Behavior journal shows that estrogen boosts power competition in women just like the male testosterone does, pointing that women have similar levels of competitiveness like men. For instance, estrogen levels boosted in power-motivated women when they were winning and collapsed when they lost, while th ... [read more >>]
	06 May 2008, 14:06GMT | (c) 2008 Softpedia

Women with Menstrual Issues Are Better Athletes
	Women's menstrual cycles may be painful, but their muscles are not. Polycystic ovary syndrome (POS) seems to make women better athletes, a Swedish research has revealed. POS leads to either no periods at all or irregular periods, but these symptoms are normal in sportive women and are normally associated in them with tough trainings and specific diets. "But in some cases polycystic ovary syndrome may be the cause. This[ADMARK ... [read more >>]
	21 April 2008, 14:06GMT | (c) 2008 Softpedia

Testosterone Spray Boosts Women's Sex Drive
	Female body contains the male sex hormone, the testosterone (like the man's body, too, contains estrogen, the female sex hormone). Testosterone is naturally produced in women by the adrenal glands and has the role of boosting sex drive. Based on this principle, researchers have imagined a testosterone spray for increasing libido in women with low sex drive. A new research carried out by a team led by Dr Susan Davis, from ... [read more >>]
	15 April 2008, 14:06GMT | (c) 2008 Softpedia

Testosterone and Money
	For you, testosterone may be a notion connected to high sex drive and muscles. But the male sex hormone influences male's behavior beyond physics and sex life. Including the economic behavior. A high testosterone blood level may translate into above-average profits for that day, as found by a new research published in the journal Proceedings of the National Academy of Sciences. The investigation was made on 17 male London fi ... [read more >>]
	15 April 2008, 14:06GMT | (c) 2008 Softpedia

The Best Hormonal Formula for Male Contraceptive Pills
	In a world where women take more control of their lives, men get more involved in the contraception process. That's why the male pill may not be such a weird issue soon. Hormonal contraception could be a safer, more effective and reversible method of male birth control compared to other ... [read more >>]
	31 March 2008, 15:06GMT | (c) 2008 Softpedia

This Is the Time to Become a Male: 8-14 Weeks of Pregnancy
	We all start as egg cells. And after being fertilized, based on the information of the sex chromosomes, the new developing organism must turn into a male or a female. A new research published in "Journal of Clinical Investigation" shows that testosterone, the male hormone, is responsible for turning an embryo into a male during a window of time before male genitalia begin to develop, and that impeding its action in that time peri ... [read more >>]
	18 March 2008, 14:06GMT | (c) 2008 Softpedia

Female-to-Male Transsexuals Have Higher Testosterone Amounts, but Not PCOS
	There are men who do not feel men enough. Others love men. And some others feel like a woman. And what about women feeling like a man trapped in a woman's body? Being transsexual is a stressful condition, and sex change operations can bring the desired results or not. A new study published in the "Journal of Clinical Endocrinology & Metabolism" shows that, oppositely to a common concept, the condition of be ... [read more >>]
	22 February 2008, 14:06GMT | (c) 2008 Softpedia

No Testosterone = Bone Fractures
	We associate testosterone with big muscles. Of course, they increase the muscle mass, but do not forget they are also responsible for the bigger bones of the males. And as men experience andropause, this affects not only muscles and sex drive, but bones as well. A new research published in the Archives of Internal Medicine has found that decreased testosterone levels in men over age 60 translates into a higher vulnerability t ... [read more >>]
	15 January 2008, 05:27GMT | (c) 2008 Softpedia

Longer Ring Finger Means a Bad Knee
	Sex hormones in the womb are known to influence the mind, the fingers and the general development. A new research published in the journal "Arthritis & Rheumatism" has found that women with long ring fingers could have a higher rate of knee arthritis. Normally, women should have index and ring fingers of the same length, while men usually possess longer ring fingers. The new research shows that women with longer ring fin ... [read more >>]
	04 January 2008, 04:50GMT | (c) 2008 Softpedia

Jokes and Testosterone: Are Funny Men More Male?
	Women like men that make them laugh, men like women that laugh at their jokes. Now an expert has found an explanation for this: male hormone testosterone. "Men make more gags than women and their jokes tend to be more aggressive," said Professor Sam Shuster, of Norfolk and Norwich University Hospital. He tested personally both genders with his jokes. "Women tended to make encouraging, praising comments ... [read more >>]
	21 December 2007, 09:29GMT | (c) 2008 Softpedia

Women Born with An Inter-Sex Condition Not Always Require Vaginal Surgery
	There are increasingly more cases in which the inner sexual feelings do not match the external genitalia. And it's not merely about sexual orientation. There are also numerous cases of ambiguous genitalia in humans, about 1: 4500 births. New discoveries are again underlining the fact that men have an XY pair of sex chromosomes, while women an XX one. Many genes can overcome this arrangement and turn XX individuals into men and XY ... [read more >>]
	29 October 2007, 15:06GMT | (c) 2008 Softpedia

Testosterone Insensitivity Turns Men Into Women
	The classic knowledge states that men have an XY pair of sex chromosomes, while women an XX one. Recent studies showed that many genes can bypass this arrangement and turn XX individuals into men. Now, a German-American team has discovered that the body's reactivity to testosterone is even more important than the presence of the Y chromosome in deciding the sex of the future baby. The scientists compared individuals with complete ... [read more >>]
	20 October 2007, 03:58GMT | (c) 2008 Softpedia

Why Do Married Men Have A Lower Sex Drive?
	Don't blame it on the age, it’s marriage the one that makes a man less…male. Married/father males have been found to have significantly lower testosterone levels, as found by two new studies made at the University of Nevada, Las Vegas (UNLV), and led by anthropology professor Peter Gray. These researches are amongst the first carried outside North America, and studying facts from a cross-cultural perspective. "As the scientif ... [read more >>]
	18 October 2007, 13:06GMT | (c) 2008 Softpedia

High Testosterone and Monogamy Do Not Match!
	Good husbands cannot be that masculine. A mixed team from Indiana University Bloomington, University of Virginia and University of Southern Mississippi investigating a natural population of Carolina dark-eyed juncos (Junco hyemalis carolinensis) found that natural fluctuations in testosterone levels are linked to a male's couple behavior. The capacity to produce large amounts of testosterone turns male dark-eyed juncos more aggres ... [read more >>]
	17 October 2007, 03:26GMT | (c) 2008 Softpedia

New Male Contraceptive Methods
	Contraception has always been considered primarily a woman’s responsibility. Now, men have the chance to ‘help with this task’, so that women can get rid of pills, IUDs and diaphragms...at least if they do not want to hear "Daddy" when they least expect it. Nowadays, men have only two options: vasectomy, which in most cases is permanent, and condoms, which don’t really ‘match’ with a long-term relationship. But new researche ... [read more >>]
	01 October 2007, 15:41GMT | (c) 2008 Softpedia

Testosterone Patches to Increase Women's Sex Drive
	It's a fact that men are so horny because of testosterone. Now, women could benefit from this, too. A new study shows that women with hypoactive sexual desire disorder (HSDD), characterized by persistent or recurrent deficiency and/or lack of sexual fantasies/thoughts/desire or absence of sexual receptivity) show significant improvement in sexual drive and sexual life after experiencing low level testosterone treatment. ... [read more >>]
	15 August 2007, 13:51GMT | (c) 2008 Softpedia

Females Invest More in Offspring Conceived with Sexy Males
	Sex and economics seem to be connected: animals tend to invest in their offspring according to their expected payoff. A team of behavioral ecologists at the National Museum of Natural History and the Laboratory of Evolutive Parasitology, Paris showed that, in the peafowl (Pavo cristatus), when females mated with attractive males, they invested more resources in their eggs than females paired with less attractive males. In the first case, ... [read more >>]
	23 July 2007, 04:55GMT | (c) 2008 Softpedia

Dog Male Contraception Instead of Castration
	Good times for the male pooches. Their balls will be safe, while they will get friendlier, due to a new contraceptive implant that stops testosterone and sperm production for months. It is expected to obtain European approval within weeks, and it could be also sold in the US. The production of sex cells (egg and sperm) is controlled by the release of hormones from the pituitary gland, found under the control of gonadotrophin r ... [read more >>]
	12 July 2007, 13:06GMT | (c) 2008 Softpedia

Why Do Married Men Cheat More Than the Others?
	Being fair play or not seems to be a question of sex hormones in men. A new research found that men with high testosterone levels are more likely to reject low offers, even if, this way, they’re losing money. It appears that our deepest ancestral behaviors can make us choose irrational economic decisions. In the experimental game, an anonymous individual can give either a large or small chunk of cash to another person, without any negot ... [read more >>]
	05 July 2007, 14:21GMT | (c) 2008 Softpedia

What's a Micropenis?
	A man with a micropenis has an unusually small penis, of about 2 cm at birth, and 4 cm in adulthood (2.5 times smaller than the average penis size). The micropenis is discovered shortly after birth when all parts of the genitals have had a chance to fully evolve, when scrotum and perineum is well-developed, to discard ambiguity like hypospadias. Micropenis is very rare and only shows up in about 0.6 % of the entire male population. The ... [read more >>]
	22 June 2007, 15:31GMT | (c) 2008 Softpedia

A Twin Brother Means Infertility and Less Sex for His Twin Sister!
	Would you still love your brother if you knew that because of him you've got no chance to have a healthy sex life and/or getting married? Because this is the case of girls born in mixed sex twin couples. Same sex female twin couples seem not to present this problem. A team led by Virpi Lummaa at University of Sheffield, UK, investigated Finnish church records from 1734 to 1888, containing data of births, deaths and marri ... [read more >>]
	19 June 2007, 15:06GMT | (c) 2008 Softpedia

Vegetables and Healthy Sex
	Are you an exclusive meat-eater? Bad news, ‘cause your veggies could revigorate your sex life. A team including Kevin McGraw an assistant professor at Arizona State University and Daniel Ardia, of Franklin and Marshall College in Pennsylvania has showed that carotenoids – the pigments that give carrots the orange and corn yellow color – eliminate the negative health effects induced by testosterone. Testosterone is known to lie behi ... [read more >>]
	15 June 2007, 14:56GMT | (c) 2008 Softpedia

Low Testosterone Levels Shorten Men's Life
	Women definitely know why they want a macho: because they live longer! A new research suggests that men with low levels of testosterone are 33 % more predisposed to a premature death than men with high levels of the male sex hormone. It seems that "testosterone replacement therapy", the male equivalent of hormone replacement therapy in women, is effective. "We are very excited by these findings which have important ... [read more >>]
	06 June 2007, 16:06GMT | (c) 2008 Softpedia

What Should a Woman Eat to Reach Orgasm?
	45 % of the young women have been found by a recent research to experience sexual dysfunction. Recently, Marrena Lindberg, 38, from Boston, comes with a sexual diet that could give women back their sexual health and pleasure. The Orgasmic Diet has four main hints, involved in enabling healthy sexual function in women: enough free testosterone, balanced dopamine-serotonin concentrations, pelvic muscle tone, and good genital circulat ... [read more >>]
	31 May 2007, 15:41GMT | (c) 2008 Softpedia

Estrogen Linked to Aggressiveness
	Who says women are not aggressive? Scientists were puzzled when they noticed that female hormone estrogen induces calm and relaxation during the long summer days and aggressiveness during short winter daylight in the male Oldfield Mouse (Peromyscus polionotus), a native to southeastern US. This is one of the first researches linking the length of daylight to gene-influenced behavior. "We found that estrogen has totally opposite ... [read more >>]
	22 May 2007, 07:21GMT | (c) 2008 Softpedia

Testosterone Saves the Brain
	Testosterone is not good just for growing big muscles and turn men and women horny. A pilot research at UCLA indicates that testosterone fights multiple sclerosis (MS) in men after another large-scale clinical trial just underway confirmed that the female hormone estriol has the same effects on women. The team led by Dr. Rhonda Voskuhl, the director of Multiple Sclerosis Program, has discovered that a testosterone gel for men decreased MS ... [read more >>]
	16 May 2007, 09:40GMT | (c) 2008 Softpedia

Testosterone Creams do not Increase Female Sex Drive
	Female sex drive can drop severely following chemotherapy in cases of cancer. Some researches have revealed a link between testosterone therapy (androgen therapy) and higher sex drive in women with the right estrogen level. A new clinical trial showed that higher testosterone levels for female cancer survivors through creams had not a greater impact on their sex drive more than a placebo. The survey made by a team led by D ... [read more >>]
	02 May 2007, 02:58GMT | (c) 2008 Softpedia

Testosterone Induces Three Times More Bladder Cancer in Men than Women
	Bladder cancer turns into a nightmare the life of its victims, triggering excruciating piss problems. The disease affects about three times as many men as women: 50,000 men are estimated to develop it this year compared to 17,000 women in the US. Now a team led by Dr Chawnshang Chang, of the University of Rochester Medical Center can explain why: this cancer development appears to be determined by the testosterone molecular ... [read more >>]
	23 April 2007, 06:40GMT | (c) 2008 Softpedia

Low Uterine Testosterone Levels Determine Homosexual Behavior in Males
	What's inside a woman's head is very different from what's inside a man's head. Researchers know that the way neurons fire inside the brain differs related to sex, and this determines differences in how a woman's and a man's brains function. Now a research team has found that the way a brain functions, whether womanish or mannish, depends on the womb exposure to sex hormones, a discovery that could exp ... [read more >>]
	16 April 2007, 03:21GMT | (c) 2008 Softpedia

High Testosterone Level Makes You Enjoy Angry Faces
	A face like Steven Segal's may upset or raise concern, but there are some individuals with high levels of testosterone who actually enjoy angry looks and even seek methods to provoke them, as suggests a new research. "It's kind of striking that an angry facial expression is consciously valued as a very negative signal by almost everyone, yet at a non-conscious level can be like a tasty morsel that some people will vigoro ... [read more >>]
	02 April 2007, 10:05GMT | (c) 2008 Softpedia

At Last, Female Viagra!
	Viagra, the anti-impotence drug that – for ten years now – has been helping men who have lost their sex drive, will become this week available for women on the NHS (National Health Service). A pharmaceutical patch named Intrinsa is designed to boost women’s libido. The female Viagra is now all set to boom the sex lives of women and Intrinsa is the first of about 20 female sex drugs under development. The drug works by stimulating ... [read more >>]
	26 March 2007, 10:27GMT | (c) 2008 Softpedia

Sex Makes Women Feel Hotter
	Testosterone is a very pushy hormone that induces that horny state in men. A new Canadian research points out that in fact, risen levels of testosterone act in men and women, straight or gay, in the same manner, making them feel really hot... Men are almost always disposed to sex, but in women, testosterone must fuel the desire for intercourse. And it was found to increase the likelihood of an orgasm but the new research shows t ... [read more >>]
	09 March 2007, 08:50GMT | (c) 2008 Softpedia