What are normal testosterone levels by age? An older photographer mentors a younger one. Testosterone is an important hormone. It helps men develop during puberty, and as they age, it plays a critical ...

A more accurate way to determine if your testosterone levels are notably low is to look for symptoms and/or signs associated with low testosterone in combination with low total testosterone levels.

NEW YORK (Reuters Health) - A new oral testosterone undecanoate formulation can restore testosterone concentrations to normal in hypogonadal men, researchers report. "Effective as other testosterone ...