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How effective is hormone therapy?
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.
Context: Hormone Therapy for Breast Cancer
How effective is hormone therapy?
Researchers have studied hormone therapy as a breast cancer treatment for many decades. Results of studies have shown that hormone therapy, when taken for 5 years or more, can greatly reduce the risk of new breast cancer, breast cancer recurrence, and dying from breast cancer. Your doctor may have information about how effective hormone therapy will be for your specific diagnosis.
Preserved source evidence · Independent clinical review pending · Not medical advice