Posts Tagged ‘testosterone’

Testosterone pumps up threats for tough guys

STANFORD (US) — The higher a man’s testosterone level, the more macho he’s likely to act when his masculinity is threatened, a new study finds. Continue…

Tuesday, April 16, 2013 15:03 - 3 Comments

Health & Medicine - Feb 25, 2013 12:25 - 1 Comment

Shiitake-soy blend tested as prostate cancer therapy

UC DAVIS (US) — A natural product available in health stores may help lengthen the life expectancy of certain prostate cancer patients, according to a study conducted in cancer cells and in mice. (more…)

Science & Technology - Jan 7, 2013 16:04 - 5 Comments

Finger length ratio hints at angry mouth

U. BUFFALO (US) — Men and women with a smaller ratio between the lengths of their fourth and second fingers report themselves to be more verbally aggressive, new research shows. (more…)

Health & Medicine - Oct 16, 2012 16:13 - 1 Comment

In obese boys, up to 50 percent less testosterone

U. BUFFALO (US) — Obese adolescent boys have up to 50 percent less total testosterone than do normal-weight boys of the same age, significantly increasing the risk for impotency as adults. (more…)

Health & Medicine - Sep 5, 2012 15:43 - 1 Comment

Compound may lead to first Pill for men

TEXAS A&M (US) — A compound originally used for anti-cancer treatments appears to be effective in controlling fertility in male mice. (more…)

Science & Technology - Jun 7, 2012 14:00 - 3 Comments

Angry birds may reveal evolution in action

INDIANA U. (US) — The aggressive behavior of wild birds varies according to how their brains process testosterone, according to a new study. (more…)

Health & Medicine - Mar 28, 2012 11:51 - 1 Comment

After soccer, testosterone soars in Amazon men

UC SANTA BARBARA / U. WASHINGTON (US) — Men from an isolated indigenous group in Bolivia experienced a 30 percent increase in testosterone after a soccer game. (more…)

Testosterone drops when dudes become dads

NORTHWESTERN (US) — Dads are biologically wired to care for kids, according to a new study that finds fatherhood lowers testosterone levels. (more…)

Science & Technology - Jul 15, 2011 9:33 - 0 Comments

Male fish go from ‘zero to 60′ to mate

STANFORD (US) — Subordinate cichlid fish have an impressive ability to rise to the procreative occasion with stunning speed if the alpha male—usually the only one to reproduce—abdicates. (more…)

Health & Medicine - Sep 28, 2010 9:50 - 1 Comment

Stress negates effects of testosterone

U. TEXAS-AUSTIN (US) — High levels of the stress hormone cortisol play a critical role in blocking testosterone’s influence on competition and domination. (more…)

Health & Medicine - Sep 15, 2010 12:13 - 0 Comments

Early nutrition shapes male maturity

NORTHWESTERN (US)—Boys who experience rapid weight gain in the first six months of life will most likely experience early puberty as well, according to a new study. (more…)

Science & Technology - May 24, 2010 10:25 - 2 Comments

Fearful fish picks a fight with its reflection

STANFORD (US)—Fish faced with their reflection in a mirror get aggressive, but also show an unexpected element of fear, which they don’t show when fighting a real foe. (more…)

Health & Medicine - May 11, 2010 14:38 - 11 Comments

Diabetes causes drop in testosterone

U. BUFFALO (US)—The effect of diabetes on lowering testosterone levels is similar to a weight gain of 20 pounds, according to new research that finds 40 percent of obese men have below-normal testosterone levels. (more…)

Science & Technology - May 4, 2010 11:18 - 1 Comment

The downside to tons of testosterone

INDIANA U. (US)—Too much—or too little—testosterone may put some males at an evolutionary disadvantage, according to new research involving an American songbird. (more…)

Health & Medicine - Feb 25, 2010 12:03 - 1 Comment

As testosterone dips, quality of life dims

U. SHEFFIELD (UK)—Male cancer survivors who develop testosterone deficiency often report having impaired quality of life and reduced energy levels, indicating replacement therapy may benefit some patients. (more…)

Health & Medicine - Jan 5, 2010 12:49 - 0 Comments

‘Macho’ receptor slows wound healing

U. ROCHESTER (US)—A molecular receptor pivotal to the action of male hormones such as testosterone also plays a crucial role in the body’s ability to heal, report scientists in the December issue of the Journal of Clinical Investigation. (more…)

Science & Technology - Dec 9, 2009 14:54 - 0 Comments

Why King Kong failed to impress

DUKE (US)—Humans have the same receptors for detecting odors related to sex as do other apes and primates. But each species uses them in different ways, stemming from the way the genes for these receptors have evolved over time. (more…)

Health & Medicine - Nov 16, 2009 16:25 - 2 Comments

Phthalates prevent boys from being boys?

U. ROCHESTER (US)—A study of 145 preschool children reports that when the concentrations of two common plastic softeners—known as phthalates—in mothers’ prenatal urine are elevated their sons are less likely to engage in male-typical play. (more…)

Society & Culture - Oct 22, 2009 12:24 - 0 Comments

Testosterone tumbled in McCain’s male voters

DUKE (US)—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. (more…)