The growing availability of more effective therapies has contributed to an increased survival of patients with breast cancer. In hormone receptor-positive early disease, increased survival is strongly correlated with the use of adjuvant endocrine therapy, but this therapy can cause side-effects that have major consequences in terms of treatment adherence and patients' quality of life. In premenopausal breast cancer survivors, these side-effects might be even more prominent due to the abrupt suppression of oestrogen associated with the most intense endocrine therapies. An important ambition of cancer care in the 21st century is to recover pre-cancer quality of life and emotional and social functions, which is only possible through the mitigation of the side-effects of anticancer treatments. This Review presents a comprehensive summary of the efficacy and safety data of the available interventions (hormonal and non-hormonal pharmacological strategies, non-pharmacological approaches, and complementary and alternative medicine) to control selected side-effects associated with adjuvant endocrine therapy (hot flashes, sexual dysfunction, weight gain, musculoskeletal symptoms, and fatigue), providing updated, evidence-based approaches for their management.
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