4 doctors weighed in:

How do breast cancer anti estrogen pills work?

4 doctors weighed in
Dr. Richard Orr
Surgery - Oncology
2 doctors agree

In brief: Starve tumor

Many tumors are fed by estrogen - the main female horomone.
Anti-estrogen pills block the effects of estrogen (in a variety of different ways) and thereby starve the tumor from a vital growth factor. Even if you are postmenopausal (or even male) your body still produces estrogen in places like the adrenals and subcutaneous fat.

In brief: Starve tumor

Many tumors are fed by estrogen - the main female horomone.
Anti-estrogen pills block the effects of estrogen (in a variety of different ways) and thereby starve the tumor from a vital growth factor. Even if you are postmenopausal (or even male) your body still produces estrogen in places like the adrenals and subcutaneous fat.
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Dr. John Geisler
Gynecology - Oncology

In brief: Aromatase inhibitor

An aromatase inhibitor blocks the conversion of testosterone like hormones in fat cells to the strong estrogen (estrone).

In brief: Aromatase inhibitor

An aromatase inhibitor blocks the conversion of testosterone like hormones in fat cells to the strong estrogen (estrone).
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