WHAT'S INSIDE: SEXUAL HEALTH

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
FEATURED: SEXUAL HEALTH

What is an erection self-test? Learn more about who is a candidate, how it is performed and what the result mean in this article.

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Try to estimate when you're ovulating and have sex regularly -- that's the basic recipe for getting pregnant. But what about when you're NOT trying to make a baby? Do you know the ins and outs of how not to get pregnant?

Why do some species change sex?

In high school biology, we're taught that biological sex is a game of X and Y. In recent decades, though, scientists have learned that things might not be so clear-cut. That may seem unusual to us, but it wouldn't surprise a clownfish one bit.

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