Testosterone is the primary androgen — or male hormone — in your body. Low testosterone affects up to 39 percent ...

Testosterone therapy can help men with low hormone levels, but experts warn of serious risks including stroke, prostate ...

A recent study has somewhat alarming news for men: testosterone levels have been on a slow and steady decline over the years. So why is it happening, and what are the subtle signs your body may be ...

More objects are being launched into space than ever, and most are headed for low Earth orbit. This region of space has become increasingly crowded with launches from SpaceX and others that have ...