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

A viral Twitter post from April 9 claims testosterone levels have dropped by almost 50% over the past 20 years. "Here's a cheery Friday fact," reads the post. "An average 22 year-old (sic) male today ...

Starting around age 40, many men notice the first physical changes that may be related to their hormone levels: Energy wanes ...

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." Welcome to Testosterone HQ—Men's Health's guide to the exciting, complicated, and revolutionary world of ...

Genetics play a role in low testosterone for some men, but underlying causes vary widely. Many genes influence testosterone ...

I never expected to get my hormone levels checked at CES 2026, let alone with my iPhone, but then this huge tech show is full ...

With the prevalent use of opioids in the treatment of acute and chronic pain, the effect on the hypothalamus is often overlooked. Fatigue, low libido and decline in mental function are frequently ...

DEAR MAYO CLINIC: I'm a 56-year-old man without any health problems. Recently, I've noticed I don't have the energy for physical activities that I used to. Working in the yard, riding my bike and even ...

Low testosterone levels in men with symptomatic COVID-19 were associated with a greater risk of severe illness or death, according to Italian researchers. Their case-control study found that, among ...

DEAR MAYO CLINIC: I'm a 56-year-old man without any health problems. Recently, I've noticed I don't have the energy for physical activities that I used to. Working in the yard, riding my bike and even ...