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Area of Science:

  • Endocrinology
  • Bone Biology
  • Metabolic Health

Background:

  • Menopause leads to changes in bone and body composition.
  • Menopausal hormone replacement therapy (HRT) is used to mitigate these changes.
  • The CoLaus/OsteoLaus cohorts offer insights into HRT's long-term effects.

Purpose of the Study:

  • To evaluate the impact of HRT on bone health and body composition.
  • To assess the persistence of HRT benefits after treatment discontinuation.

Main Methods:

  • Analysis of data from the CoLaus/OsteoLaus cohorts.
  • Assessment of bone mineral density, bone microarchitecture, and fracture risk.
  • Evaluation of body composition, including fat mass distribution.

Main Results:

  • HRT positively affects bone mineral density, microarchitecture, and fracture prevention.
  • These bone benefits persist for 2-5 years after HRT cessation.
  • HRT reduces abdominal and visceral fat mass, crucial for preventing diabetes and cardiovascular disease.
  • Body composition benefits from HRT appear to diminish immediately after discontinuation.

Conclusions:

  • HRT offers significant benefits for bone health during and after treatment.
  • The positive effects on body composition are transient and disappear upon cessation.
  • Understanding these differential effects is key for personalized menopausal management.