Biological factors shape sexual preference.
A new study of nearly 500,000 individuals finds that many genes affect same-sex behavior, including newly identified candidates that may regulate smell and sex hormones.
So-called normal levels of testosterone are approximations, but can help researchers investigate disease and treatments.
Does it make sense to target female athletes with high testosterone levels? Caster Semenya competes in the women’s 800-meter semifinal during the London Olympics.
Some women naturally produce high levels of testosterone. Why is this innate condition treated differently from other conditions that potentially enhance athletic performance?
Caster Semenya was withdrawn from competition in 2009 on the basis that her higher-than-normal testosterone level conferred a performance advantage.
Until recently, women with higher-than-expected testosterone levels were declared ineligible to take part in track and field athletics.
The cost of cancer drugs is killing patients and it needs to stop
Understanding the DNA of tumours allows researchers to target treatment to each individual.
Personalised medicine is based on the idea that by understanding the specific molecular code of a person’s disease, and particularly its genetic makeup, we can more accurately tailor treatment.
Testosterone is important for the physical changes that happen during male puberty, and features typical of adult men, such as facial and body hair.
Testosterone is blamed for violence in males, implicated in sport scandals, linked to sexual prowess, desired by gym devotees, and promoted as a tonic for ageing. But how many of us really understand what…