Washington, May 17 (ANI): Sports players and athletes with high testosterone levels choose to wear the colour red when they compete, a new study has revealed.

Washington, May 15 (ANI): A new University of Missouri study has found that testosterone levels during group competition are modulated depending on the relationships among the competitors and may be related to the formation of alliances in warfare.

Washington, April 26 (ANI): Researchers have long suspected a correlation between hormone levels and libido, but now scientists at UC Santa Barbara have actually demonstrated hormonal predictors for sexual desire.

Washington, April 21 (ANI): Women at their peak fertility find the smell of men with higher testosterone levels more appealing, according to a new study.

Washington, Apr 4 (ANI): Low testosterone levels may be an indication for the subsequent development of rheumatoid arthritis in men, a new study suggests.

Johannesburg, Feb 28 (ANI): Paralympic star Oscar Pistorius had been given a clean chit from doping charges by the World Anti-Doping Agency (WADA), who said that it has already been made aware of the substance found in Pistorius bedroom and that it was not banned.

London, February 27 (ANI): Producing sons is more stressful for mothers and could shorten their livespans, a study has suggested.

Wellington, Feb 25 (ANI): A substance found in Paralympic champion Oscar Pistorius' room following the investigation of the death of his girlfriend Reeva Steenkamp has been claimed to be a herbal sex remedy, instead of testosterone, according to media reports.

Washington, Feb 14 (ANI): Animals exposed to low night-time light intensities, comparable to those found in cities, develop their reproductive system earlier, a study has found.

Washington, Feb 6 (ANI): Charlie Sheen is convinced that testosterone cream brought on his infamous meltdown in 2011.

London, February 3(ANI): Increasing number of men who are suffering from low testosterone are going for testosterone replacement therapy (TRT), dubbed by some as 'the Superman jab,' to boost their sex life.

Washington, 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.

London, Jan 25 (ANI): 'Man flu' really does exist, as according to a study, men suffer more with coughs and colds because they have extra temperature receptors in the brain and so experience worse symptoms.

Melbourne, January 24 (ANI): The world's first study to test whether testosterone injections could help prevent type-2 diabetes in men will start in Australia this year.

Melbourne, January 15 (ANI): A test being conducted in Western Australia for preventing and delaying Alzheimer's disease, which will combine testosterone and fish oil, is ready to go on trial.

Washington, December 28 (ANI): A bird listening to birdsong may experience some of the same emotions as a human listening to music, suggests a new study on white-throated sparrows.

Washington, December 26 (ANI): Testosterone, which is often associated with aggression, may foster social behaviour and honest interactions, researchers say.

Washington, November 30(ANI): A new study has linked verbal aggression to prenatal testosterone exposure.

Washington, November 6 (ANI): 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 behaviour, that in extremes, are related to several neuropsychiatric conditions that asymmetrically affect one sex more than the other, a new study has found.

London, Oct 19 (ANI): Obese teenage boys have up to 50 percent less testosterone than their leaner pals - increasing their risk of infertility later in life, a study led by an Indian-origin researcher has warned.

Washington, October 17 (ANI): 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.

Washington, October 11 (ANI): Testosterone is considered the male hormone, standing for aggression and posturing, but researchers from the University of Bonn have now revealed that this sex hormone surprisingly also fosters social behaviour.

Wellington, September 28 (ANI): Propecia, a hair restoration product manufactured by US pharmaceutical company Merck, interferes with male hormones, including testosterone derivatives.

Washington, September 25 (ANI): Male sex hormones are responsible for shortening the lives of men, a new study has suggested.

Washington, September 6 (ANI): Closer sleeping proximity between fathers and children is associated with a greater decrease in the father's testosterone level, with possible implications for parenting behaviour, a new study has claimed.