Research Summary

This study aims to synthesize contemporary evidence on the benefits, risks, and emerging options in menopausal hormone therapy (MHT), emphasizing the recent literature. A narrative review of peer-reviewed studies and guidelines (up to September 2025) from major databases (e.g., MEDLINE/PubMed, Embase, Cochrane) was conducted, with emphasis on the last five years and qualitative synthesis. MHT provides the most effective relief of vasomotor symptoms and is the first-line treatment for genitourinary syndrome of menopause, particularly with the use of low-dose local vaginal estrogen preparations; it also prevents early postmenopausal bone loss and reduces fractures in selected cases. Cardiovascular prevention is not an indication. Benefit–risk depends on timing, route, and dose. Initiation within 10 years of menopause as well as the use of transdermal estradiol at low–moderate doses are favored when cardiometabolic or thrombotic risk is salient. In contrast, oral regimens—particularly those using conjugated equine estrogens—are associated with higher risks of venous thromboembolism and stroke compared with transdermal 17 β-estradiol, and risk also varies by the type of progestogen used. Effects on breast cancer risks are regimen-specific: neutral to favorable with estrogen-alone after hysterectomy, but increasing with longer use of combined therapy. While the absolute risk of ovarian cancer remains small, evidence for colorectal cancer remains mixed. MHT confers modest improvements in sleep, mood, intercourse, and quality of life. Estetrol (E4) shows anti-VMS efficacy at the minimum effective oral dose and favorable pharmacology, but conclusive data on its long-term cardiovascular, thrombotic, and breast safety are pending. MHT should be individualized appropriately based on the patient, timing, route, dose, and choice of progestogen. The lowest effective dose should be used, alongside periodically reassessing the therapy as new evidence, including emerging data on E4, emerges.