LiveScience Topics: Sex

Sex and sexuality is about more than just two people, a bed, and a few aphrodisiacs. Scientists study why humans have sexual intercourse (it is good for you and good for the species) and how sex is driven by evolution, genes, emotions and more. There is also much to learn about the differing roles of men and women in the whole mating game. Yes, there's lots of science to explore. Not that an aphrodisiac isn't more fun.

Explore Sex

No Surprise: Coed Dorms Fuel Sex and Drinking

Coed dorms fuel very unhealthy behavior that might otherwise be moderated.
MRI Reveals Organs During Sex

Dr. Pek Van Andel and colleagues made the first MRI images of male and female sex organs while couples were having sex.
Politician Nixes HIV/AIDS Studies

Federal grants for studies designed to better understand the spread of HIV/AIDS called wasteful spending.

More Sex News and Information

Spiritual Women Have More Sex

New research has found that spirituality has a greater effect on the sex lives of young adults.
The Risks of Summer Sex

Unsexy as it sounds, there are some health risks and practical concerns associated with summertime sex.
Antioxidants Boost Sperm Quality

Men who ate antioxidant-rich fruits and vegetables have better rates of sperm movement, ejaculate volume, and sperm concentration.
Leaders Called Upon to Support Sexual Health

The tenets of sexual health need to be addressed and upheld, and political and religious leaders should lead the charge.
Involved Dads Lower Their Kids' Sex Risks

A new study finds that the involvement of fathers lowers risky sexual behavior in teenagers.
How Safe Is the Pill?

While oral contraceptives are effective in reducing the risk of unwanted pregnancy, its effects on the human body – both good and bad – have been cause for debate.
Effects of Infidelity on Men vs. Women Surprise Researchers

A recent study discovered that men feel guiltier following sexual infidelity, while women feel guiltier after emotional transgression.
Some Men Prefer Fat Women

A recent study finds that not only do some men prefer overweight women, but that they also find a wide range of body sizes attractive.
10 Surprising Sex Statistics

Whether it's penis size, papillomavirus risk, or profligate pregnancies, it's good to know the numbers.
Survey Finds 'Friends with Benefits' Common

How well do "friends with benefits" relationships work?
The Truth on Whether 'Opposites Attract'

A new study finds that when it comes to personality, people seek partners with their same qualities.
Why Some Women Find Sex Painful

Research suggests women's pain during sex should be reclassified as a pain disorder rather than a sexual dysfunction.
Penile Extenders Actually Might Work, Doctors Say

Doctor's confirm the Andropenis penile extender can increase the flaccid length of a penis by nearly one inch.
The 300-year History of Internet Dating

Internet dating is just the modern version of the first "matrimonial" agencies of the 1700s.
Secret Birth Control Method: The Welcome Dance of the Uterus

The uterus plays a role in make sure sperm are in the right place at the right time.
Focusing on Sexual Desire Can Ruin It

Women who pay too much attention to their performance during sex could be inhibiting sexual desire.
Sex Sells, But Who's Buying?

Sex in advertising? Women aren't buying it.
What Modern Men Want in Women

What do men want in a woman? Brains? Beauty? Vacuuming prowess?
Everyone Agrees: Women Are Hard to Read

Both men and women are able to gauge a man’s interest in a woman, but are equally baffled when it comes to figuring out if a woman is interested in a man.
Women's Brains Respond to Manly Men

A new study finds that the brains of hormonal women respond to men with overtly masculine facial features.
Female Companionship Extends Sex Lives of Male Mice

When male mice live with female mice, their reproductive years are extended by up to 20 percent.

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