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How does estrogen work to prevent fertilization in contraceptive pills?
1 doctor weighed in

Dr. Michael Traub
Fertility Medicine
In brief: 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.

In brief: 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.
Dr. Michael Traub
Dr. Michael Traub
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