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

Secondary sex characteristics appear during puberty and include breast development and facial hair. Learn about secondary sex characteristics from this article.

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