Sexual preference may not be written in our genes, but rather in how our genes are expressed
testosterone
In a Rush to Mature: Study Finds Boys Hitting Puberty Earlier than Ever
First girls, now boys. Puberty is Inching ever deeper into childhood
Which Drugs Is Lance Armstrong Accused of Taking?
Here’s a rundown of the banned substances that Armstrong allegedly used to fuel his historic seven Tour de France wins
Testosterone, the Power Hormone
Biology meets history in a new book on revolution, riot and the sex hormone testosterone. Author Karin Kneissl explains
The Secret to Guys’ Sex Appeal: Low Stress, High Testosterone, Strong Immunity
Washboard abs and a chiseled jaw are a draw, but a recent study suggests it may be a man’s healthy immune system that really turns women on.
Why Fathers Are Less Likely to Die of Heart Disease
Having children may drain a man’s testosterone, but a large family may also be an indicator of heart health, a new study finds.
The Healthland Podcast: Cervical Cancer, Blood-Donation Rules, and Testosterone
This week we discuss cervical cancer, IUDs and the politicized debate over HPV vaccination. We also talk about whether gay men should be allowed to donate blood and why fathering a child depletes testosterone. Listen to this …
Family MattersParenting
Why Fathers Have Lower Levels of Testosterone
Fathers may not want to hear that their testosterone levels are dropping, but new research bears that out, finding that the male hormone plummets in men after they have children — most dramatically in dads who really involve …
Family MattersPregnancy
Study: Smoking During Pregnancy May Result in Uncoordinated Kids
As if you needed another reason to quit smoking — especially during pregnancy — consider that women who puff while pregnant may hobble their babies’ coordination and physical control.
CommittedGender
Another Reason to Hire Female CEOs: Less Testosterone
Young male CEOs’ hormones sometimes get the better of their economic reasoning. Especially around the issues of merging and acquiring. So more companies should have women CEOs. At least that’s the way we’re reading a new …
The BPA Debate: Bad Reputation and Still No Answers
Bisphenol-A (BPA), the endocrine-disrupting chemical in plastics — and the go-to environmental health villain — has vexed public-health experts for at least a decade. Reams of inconclusive and conflicting studies on the …
Ability to breast-feed may be influenced by hormones
Whether or not a mother can successfully breast-feed her infant may have to do with her concentrations of testosterone, according to a new study from researchers at the Norwegian University of Science and Technology. The study, published in the journal Acta Obstetricia and Gynecologica Scandinavica, followed 180 women from pregnancy
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Politics can be bad for the libido
Republicans suffered a set back last November in more ways than one. A new study appearing today in the medical journal PLOS One shows that, in the hours after Obama was announced the 44th president of the United States, male, college-aged McCain fans experienced an immediate drop in testosterone. For the study, 183 people offered up …
