How does birth control help?

Answer 1

From what I believe, BC pills contain progestin (which is a synthetic version of progesterone.) During a regular cycle progesterone is released during ovulation and continues in higher doses during pregnancy. The progesterone is the hormone responsible for building the uterus up so that the fertilized egg has a healthy spot to implant. When a body feels that the progesterone is high it assumes it is because implantation has occurred and therefore does not release another egg. So BC pills trick your body into not releasing the eggs from the ovaries by hormone manipulation. That is why it is so important to take the pills as scheduled and not miss any doses.

Answer 2

Yes. If used correctly they are over 99% effective in preventing pregnancy.
Yes, 90% of the time, Birth Control pills prevent pregnancy. But not all the time.
To an extent it is like a condom, no promises. if taken on a regualr basis it will reduce the chances tremendously. Antibiotics will reduce the effecticeness of "the pill"

As well as know theres those cases where it doesnt work

Answer 3

Birth control helps people avoid pregnancy. There are a number of methods that protect against pregnancy in different ways. Barrier methods, like condoms, help by blocking sperm from reaching an ovum. Hormonal methods, like the patch or pill, prevent ovulation and implantation. Sterilization methods, like a vasectomy, are usually surgical and irreversible.