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FOR PATIENTS · SOURCE READING

Hormone Therapy for Breast Cancer

Source: Hormone Therapy for Breast Cancer, National Cancer Institute.

Source updated: December 2, 2025 · Captured 2026-09-09.

Selected source text with whitespace normalised. This Triangle page is not an NCI PDQ summary. Independent clinical review is pending.

NCI patient treatment article for this disease Exact source article; not a clinically reviewed indication or current-standard recommendation.

Hormone therapy (also called hormonal therapy, hormone treatment, or endocrine therapy) slows or stops the growth of some breast tumors by blocking the body’s ability to produce hormones or by interfering with effects of hormones on breast cancer cells.

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Who gets hormone therapy? →What types of hormone therapy are used for breast cancer? →How is hormone therapy used to treat breast cancer? →What are the side effects of hormone therapy? →What if side effects of hormone therapy interfere with my life? →How effective is hormone therapy? →Can other drugs interfere with hormone therapy? →

Preserved source evidence · Independent clinical review pending · Not medical advice