New U.S. dietary guidelines for the first time include advice for men on maintaining healthy testosterone levels.

Total testosterone measures the full amount of the hormone in your blood, while free testosterone represents the small, ...

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 ...

This article was reviewed by Felix Gussone, MD. If you’ve been feeling a bit more couch potato than go-getter lately, dragging through the day, snapping at people for no reason, or wondering where ...

Testosterone therapy is on the rise as men seek more energy and vitality, revealing shifting views on aging and modern masculinity.

Everyone produces testosterone, regardless of sex. Not only is it a pivotal hormone in development (particularly for males) and for masculine characteristics, it's also essential for muscle growth, ...

Regular readers of my column know that I have been very bullish on intermittent fasting, and I regularly receive notes from others who have tried intermittent fasting and benefited greatly. Here is a ...

While the science isn’t yet clear, you could join the research that’s working to understand how nicotine affects testosterone levels. Nicotine is a highly habit-forming substance, one that can be in ...