No, there is no food or beverage that prevents pregnancy.
Seriously. How the hell would Pepsi-Cola keep you from getting pregnant. It's a sugary syrup and carbonated water. No it doesn't keep you from getting pregnant.
You can write about how to prevent teen pregnancy. Or what causes teen pregnancy. Talking about the right form of education to prevent teen pregnancy will work as well.
estrogen and progesterone
No it can not.
no it can't prevent pregnancy
Prenatal vitamins are to make sure you have enough vitamins and minerals to support a pregnancy. Birth control is to prevent pregnancy. They have different purposes. Birth control does not support a pregnancy, and prenatal vitamins do not prevent pregnancy.
Vitamins don't prevent pregnancy.
BV won't prevent pregnancy.
Lithium does NOT prevent pregnancy.
NO ! ONLY contraception or abstinence can prevent pregnancy !
Starch as in pasta, potatoes etc? That does not prevent pregnancy.
No. Cytotec can be used for abortion but not to prevent pregnancy.
Yaz is a birth control pill. It is intended to prevent pregnancy.