Dear BrainfoodGary,

No. Saliva can impair some sperm, but not enough to prevent fertilization of an egg. Saliva is not a form of birth control, and oral sex before vaginal intercourse will not prevent pregnancy. Pregnancy can happen when ejaculate or pre-ejaculate gets in the vagina or on the vulva, whether or not saliva has been used as a lubricant.

Teens who are sexually active need to make choices about birth control in advance. To learn more about which birth control is right for you, call 1-800-230-PLAN for a Planned Parenthood center nearest you, or find us online.

Hope this information helps!

Take care,

teenwire.com^® Editors

This column is for informational purposes only and is not intended to constitute medical advice, diagnosis, or treatment. If you have a medical problem, please call toll-free 1-800-230-PLAN for an appointment with the Planned Parenthood health center nearest you.