Menopausal hormone therapy in breast cancer survivors: A review

Lauren M Granat1, Holly J Pederson2, Megan Kruse1

  • 1Taussig Cancer Institute, Cleveland Clinic, 10201 Carnegie Ave, Cleveland, OH, 44106, United States of America.

Maturitas
|April 1, 2026
PubMed

The use of menopausal hormone therapy (MHT) by breast cancer survivors remains controversial. While MHT is effective for the management of menopausal symptoms in the general population, its safety after breast cancer is uncertain due to limited and heterogeneous data. Menopausal symptoms, including vasomotor and genitourinary complaints, can significantly impair quality of life and adherence to therapy. Non-hormonal treatments are the first-line option but are often insufficient. Evidence suggests that low-dose vaginal estrogen can relieve genitourinary symptoms with minimal systemic absorption and without clear evidence of increased recurrence risk. In contrast, systemic MHT remains highly debated, with conflicting data confounded by differences in study design, hormone formulation, and patient selection. Management should therefore be individualized, balancing symptom severity, recurrence risk, and patient preferences. Until more definitive data are available, multidisciplinary collaboration and shared decision-making remain essential in optimizing quality of life while minimizing oncologic risk.

Related Concept Videos

Hormonal Regulation01:40

Hormonal Regulation

Hormones regulate a significant portion of digestion through activation of the neuroendocrine system. The neuroendocrine system of digestion contains many different hormones all with multiple functions that are both, directly and indirectly, involved in digestion.
Hormonal Regulation01:33

Hormonal Regulation

The renin-aldosterone system is an endocrine system which guides the renal absorption of water and electrolytes, thus managing blood pressure and osmoregulation. Activation of the system begins in the kidneys with a small cluster of cells adjacent to the afferent and efferent blood vessels of the renal corpuscle. As the nephrons are filtering blood, juxtaglomerular cells monitor blood pressure. If they detect a decrease in pressure, they release the hormone renin into the bloodstream.
Cancer Therapies02:49

Cancer Therapies

Cancer therapies are various modes of treatment, such as surgery, radiation therapy, and chemotherapy that are administered to cancer patients.
However, cancer treatments can pose several challenges, as therapies used to kill cancer cells are generally also toxic to normal cells. Moreover, cancer cells mutate rapidly and can develop resistance to chemical agents or radiation therapy. Besides, all types of cancer cells may not respond to the same therapy. Some cancer cells respond to one...
Cancer Therapies02:49

Cancer Therapies

Cancer therapies are various modes of treatment, such as surgery, radiation therapy, and chemotherapy that are administered to cancer patients.
However, cancer treatments can pose several challenges, as therapies used to kill cancer cells are generally also toxic to normal cells. Moreover, cancer cells mutate rapidly and can develop resistance to chemical agents or radiation therapy. Besides, all types of cancer cells may not respond to the same therapy. Some cancer cells respond to one...
Hormonal Regulation of the Menstrual Cycle01:22

Hormonal Regulation of the Menstrual Cycle

The ovarian cycle regulates endometrial changes throughout a single menstrual cycle via the coordinated action of gonadotrophin-releasing hormone (GnRH) and gonadotrophins.
At puberty, GnRH begins a pulsatile release pattern, which triggers the anterior pituitary gland to secrete follicle-stimulating hormone (FSH) and luteinizing hormone (LH). The frequency and amplitude of GnRH pulses vary across the menstrual cycle, with faster pulses favoring LH release and slower pulses favoring FSH release.
Menopause01:28

Menopause

Menopause, a natural biological process marking the end of a woman's fertility, typically occurs between the fifth and sixth decade of life. This phase is characterized by the exhaustion of the ovarian follicle pool, leading to less responsive ovaries despite the high levels of Follicle Stimulating Hormone (FSH) and Luteinizing Hormone (LH). The consequential decrease in estrogen production results in symptoms like hot flashes, heavy sweating, headaches, hair loss, muscle pains, vaginal...