What exactly makes a woman? Track and field's world governing body thinks the answer has to do with levels of serum testosterone, at least when it comes to female runners competing in middle-distance ...

Testosterone is an important hormone. It helps men develop during puberty, and as they age, it plays a critical role in helping control fat levels, cholesterol, and glucose levels. Testosterone ...

Do women have a testosterone problem? Social media influencers believe they do. And with the rise of telemedicine and testosterone replacement clinics opening up across the country, access to the drug ...

Many women are becoming more aware of the perks of maintaining their hormone levels as they age. Maybe that’s why testosterone is no longer the third wheel—after estrogen and progesterone—when it ...