Not for sure but obesity can mess up your hormones so you can't or have a harder time getting pregnant. Staying pregnant can also be harder with many risks.
no it can't prevent pregnancy
BV won't prevent pregnancy.
Vitamins don't prevent pregnancy.
Lithium does NOT prevent pregnancy.
it depends on were it is beening mailed to and from were and how it is beening sent
NO ! ONLY contraception or abstinence can prevent pregnancy !
No. Cytotec can be used for abortion but not to prevent pregnancy.
Starch as in pasta, potatoes etc? That does not prevent pregnancy.
Yaz is a birth control pill. It is intended to prevent pregnancy.
Advil don't prevent pregnancy no matter how many you take.
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.
No it does not.