Testosterone
Male Birth Control Pill Could Be 10 Years Away
The pill works by suppressing the hormones that control the function of the testis and sperm production, the author of a new study explains.
Women With Male Twin Less Likely to Graduate School
Scientists believe that females in opposite-sex twins are exposed to higher than normal levels of testosterone in the womb, which could affect their behavior.
Where Men Grow Up Affects Testosterone Levels: Study
Low levels of testosterone can make men lethargic, affect their libido and cause erectile dysfunction.
Ibuprofen Could Make Healthy Men Infertile
The findings add to the alarm surrounding the current male infertility crisis.
Male Birth Control Entering Clinical Trials Next Year
More than 400 couples will be involved in the trial, expected to take place in several different countries.
Why Fall is the Best Time to Start a Relationship
Pumpkin spice lattes might play a role in this.
Two Major Advances for Prostate Cancer and Lung Cancer
'We think this is one of the biggest survival benefits ever reported in a trial of an adult solid tumor,' said one expert.
Testosterone Supplements May Change How You Think
The largest study of its kind on testosterone, an increasingly-popular supplement, matches prior work on impulse behavior but the data 'don't tell a clear story.'
Defining Gender Has Become a Hot Olympic Issue
"Mandating tests for intersex athletes appears arbitrary and unfair and encourages athletes to undergo unnecessary medical operations."
How Hormones Influence the Stock Market
A new study suggests elevated levels of cortisol and testosterone may compel traders to make riskier investment decisions.
Fast Long-Distance Runners Have More Testosterone, Study Finds
Talented distance runners could possess evolutionary 'signal' from the days of hunter gatherers.
What If Alex Rodriguez's Testosterone and HGH Use Was Medically Justified?
As all men age, their testosterone production lowers. So why do we blame A-Rod for seeking treatment?