Testosterone levels peak during male puberty and decline with age in both males and females. With low testosterone in males, you can have a decreased sex drive, trouble with erections, and low sperm ...

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Many healthcare providers regard testosterone cypionate and testosterone enanthate as interchangeable, but each has differences in their ingredients and duration of action. These differences influence ...

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 ...