The Sexual Health Channel explores the functions -- and dysfunctions -- of the reproductive system. Learn about maintaining a healthy sex life and avoiding and treating sexual problems.
  • Male Reproductive System
  • Female Reproductive System
  • Contraception
  • Sexual Dysfunction
  • Sexuality

Contrary to popular belief, men don't think about sex every 7 seconds. But do they think about it more than women do? What do evolutionary biologists have to say about why one sex has a stronger sex drive than the other?

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The advent of birth control pills not only helped some women reduce pregnancy risk, it also opened the door to greater sexual freedom. But eliminating ovulation may also affect women's sex lives in other, more subtle ways. How?

What's the purpose of sex?

You only have to get your heart broken once to wonder why the opposite sex exists. Why must men be from Mars and women from Venus? Why must we live in a world divided by pink and blue? Wouldn't things be a lot easier if we were all one biological sex?

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