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 ...

Whenever one experiences growth hormones, peptide hormones, thyroid hormones, stress hormones or sex hormones, the body's chemical messengers play a key role in many essential bodily functions and ...