Combination of obesity medication tirzepatide and menopause hormone therapy fuels weight loss: Study

Using tirzepatide and menopause hormone therapy at the same time leads to increased weight loss in postmenopausal women with overweight or obesity compared to use of tirzepatide treatment alone, according to a study being presented Saturday at ENDO 2025, the Endocrine Society’s annual meeting in San Francisco, Calif.

“These data are the first to show the combined use of tirzepatide and menopause hormone therapy significantly increases treatment effectiveness in postmenopausal women,” said Regina Castaneda, M.D., research fellow for the Division of Endocrinology at the Mayo Clinic in Jacksonville, Fla. “Previous studies of the medication semaglutide found similar results. Achieving these outcomes with a second obesity medication may indicate a broader efficacy trend for pairing these two classes of medications.”

Menopause-related hormonal changes often result in increased abdominal fat, decreased muscle mass and altered energy expenditure that leads to weight gain and puts millions of women at risk for developing heart disease and other serious health issues.

To confirm the hypothesis that concurrent menopause hormone therapy enhances the effectiveness of tirzepatide for weight loss in postmenopausal women, researchers conducted a real-world study using the electronic medical records of 120 postmenopausal women over a median duration of 18 months. The study included two cohorts: 40 women using menopause hormone therapy concurrently with tirzepatide and 80 women using tirzepatide alone.