Early menopause linked to higher risk of depression hospitalization.

This large prospective cohort study, using UK Biobank data (n ≈ 140,000 women), investigates whether premature menopause—both natural (before age 40, not caused by surgery) and surgical (before age 40 due to bilateral oophorectomy)—is associated with a higher risk of serious depression requiring hospitalization, compared to menopause after age 40. It also evaluates whether frailty (a measure of decreased physiological reserve) and menopausal hormone therapy (MHT) use mediate this association.

The results show that both premature natural and especially surgical menopause are linked to an increased hazard of depression requiring hospitalization. The relationship is partially mediated by increased frailty and greater use of hormone therapy among these women. These findings emphasize the importance of mental health assessments and tailored hormone therapy strategies for women with premature menopause.

Key Points

Population Studied:

• • 139,691 postmenopausal UK women (mean age ~60 at enrollment).

  • 7,449 had premature natural menopause; 745 had premature surgical menopause.

Main Results:

• • Over a median of 12.5 years, 5.4% developed depression requiring hospitalization.

  • Compared to menopause after age 40:

    • Premature natural menopause: HR 1.27 (95% CI: 1.17–1.38)

    • Premature surgical menopause: HR 1.76 (95% CI: 1.43–2.16)

  • Surgical menopause confers higher risk than natural.

  • The younger the age at menopause, the higher the risk of depression (dose-response effect).

Mediators:

• • Frailty and menopausal hormone therapy (MHT) are significant mediating factors.

  • For natural menopause:

    • Frailty mediates ≈27% of excess risk.

    • MHT mediates ≈65% of excess risk.

  • For surgical menopause:

    • Frailty mediates ≈8% of excess risk.

    • MHT mediates ≈43% of excess risk.

  • Adjustments and sensitivity analyses confirm robustness of the findings.

Clinical Implications:

• • Premature menopause, especially via surgery, is a major risk factor for severe depressive outcomes.

  • Regular assessment of frailty and mental health, and individualized hormone therapy strategies, may be crucial for prevention and management.

  • Highlights a largely under-recognized path by which early menopause impacts long-term women’s mental health.

Strengths & Limitations:

• • Largest such cohort to date; complete follow-up using health records.

  • Results likely underestimate milder depression (since only hospitalizations counted).

  • Limitations include possible residual confounding, self-reported menopause age, and missing granularity in MHT details