A member asked:

How does estrogen work to prevent fertilization in contraceptive pills?

A doctor has provided 1 answer
Dr. Michael Traub answered

Specializes in Fertility Medicine

Prevents Egg Growth: Great question. Estrogen inhibits a hormone called FSH which usually helps grow an egg. But the Progesterone part of birth control prevents ovulation and makes the inside of the uterus thinner to prevent pregnancy.

Answered 1/15/2015

6.4k views

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