Postmenopausal women taking hormone therapy are 69 percent less likely to develop low bone mineral density, according to a study published by researchers in Mexico. The findings suggest that hormone replacement therapy (HRT) serves as a significant preventative measure against osteoporosis and osteopenia, countering a historical medical focus on potential treatment risks.
Why Hormone Therapy Protects Bone Density
Estrogen plays a critical role in maintaining the skeletal structure by regulating the cycle of bone breakdown and renewal. According to Madeline Dick-Biascoechea, MD, an obstetrician-gynecologist at the University of Maryland Medical Center, estrogen levels drop sharply during menopause, causing bones to lose density faster than they can regenerate.
Hormone therapy replaces this lost estrogen, effectively slowing the bone-thinning process. Diego Espinoza-Peralta, MD, vice president of the Mexican Society of Nutrition and Endocrinology, notes that while the medical community has long emphasized the potential risks of HRT, this new data shifts the conversation toward its tangible benefits for long-term physical independence.
Did you know? The risk of mortality following a hip fracture is significant, with 10 to 20 percent of older adults passing away within six months of the injury, according to Dr. Dick-Biascoechea.
What the Research Reveals About HRT
The study, which examined nearly 400 postmenopausal women, utilized bone mineral density scans of the hips and lumbar spine to measure calcium levels. Researchers found that the protective benefits of HRT remained consistent even after adjusting for factors such as age, smoking status, vitamin D levels, and time elapsed since the onset of menopause.

This study stands out for its focus on a Latin American population, a demographic that has historically been underrepresented in bone health research. However, the study has limitations. Because researchers scanned the participants only once after they had already begun hormone therapy, they could not track changes in bone density over time or determine which specific types of HRT provided the most benefit.
How to Determine if Hormone Therapy is Right for You
Not every patient is a candidate for hormone therapy. Dr. Espinoza-Peralta emphasizes that women over the age of 60 should be cautious, as the risk of stroke and certain cancers increases after that threshold.

Medical experts recommend the following steps for those weighing their options:
- Consult a specialist: Seek out a physician with specific expertise in menopause management to discuss your personal health history.
- Assess bone health: Request a bone mineral density scan if you are in the early stages of menopause to establish a baseline.
- Combine therapies: Dr. Dick-Biascoechea suggests that while hormones are helpful, they are most effective when paired with weight-bearing exercises, which were not measured in this study but are known to strengthen bone structure.
Frequently Asked Questions
Does hormone therapy completely prevent osteoporosis?
No, it is a tool for prevention and management. It works by slowing the rate of bone loss that occurs when estrogen levels decline, but it does not replace the need for healthy lifestyle habits like weight-bearing exercise.
Are there age limits for starting hormone therapy?
Yes. Dr. Espinoza-Peralta notes that patients over 60 often face higher risks for stroke and cancer, making HRT less appropriate for this age group compared to younger postmenopausal women.
What should I ask my doctor?
Ask about your individual risk factors for fractures, whether your current bone density warrants intervention, and how your personal medical history interacts with the known side effects of hormone replacement therapy.
Are you currently navigating menopause or considering hormone therapy? Share your experiences in the comments below or subscribe to our health newsletter for the latest updates on women’s wellness and preventative care.
