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 ...

Testosterone is a sex hormone that regulates a number of processes in the human body, including fertility, sex drive, bone mass, fat distribution, muscle mass, and red blood cell production.

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 ...

What you eat or drink may affect levels of the male sex hormone, but whether a diet can increase libido or energy depends on many things. Credit...Aileen Son for The New York Times Supported by By ...

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 ...

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 ...