Bone health becomes increasingly critical in your 80s, as bones naturally weaken and shrink, raising the risk of fractures and falls. Bone density peaks in your mid- to late 20s, then gradually declines over time. By the time you reach your 80s, this loss accelerates, making it essential to take preventive steps now. The good news: emerging research shows that certain interventions, particularly hormone therapy for postmenopausal women, can significantly slow bone loss and reduce fracture risk.

Why Do Bones Weaken as We Age?

As we age, bones tend to weaken as they shrink in size and density, according to Johns Hopkins Medicine and the Mayo Clinic. This process is gradual but accelerates after age 70. At the same time, muscles lose strength, endurance, and flexibility, which interferes with coordination, stability, and balance. This combination makes older adults significantly more susceptible to falls and bone fractures, which can have serious consequences for quality of life and independence.

Can Hormone Therapy Really Prevent Bone Loss?

A new study presented at ENDO 2026, the Endocrine Society's annual meeting, found striking evidence that menopausal hormone therapy (MHT) can protect bone health. Researchers studied 387 postmenopausal women who underwent bone density scans between 2021 and 2025. Of these, 129 used menopausal hormone therapy and 258 did not.

The findings were significant: women taking MHT were 69% less likely to have low bone mineral density compared to those not using the treatment. Among women receiving MHT, only 31.8% had low bone mineral density, compared with 56.2% of non-users. MHT users also had significantly higher bone mineral density in both the lumbar spine and hip, two areas where fractures are especially common in older women.

"I believe our findings are clinically relevant because they provide real-world evidence supporting the association between menopausal hormone therapy and better skeletal health in postmenopausal women. Women receiving MHT had significantly lower prevalence of low bone mineral density, higher lumbar spine and total hip T-scores, and a 69% lower adjusted odds of low bone mineral density after accounting for major clinical risk factors," stated Diego Espinoza-Peralta, MD, MSc, Endocrinologist and lead researcher.

Diego Espinoza-Peralta, MD, MSc, Endocrinologist, Centro Médico Dr. Ignacio Chávez ISSSTESON

However, it's important to note that MHT is not suitable for everyone. The decision to start hormone therapy needs to be individualized, as there are potential risks including increased risk of uterine cancer, and in some cases, higher risk of heart attack, stroke, and breast cancer. Women considering MHT should discuss their personal medical history and treatment goals with their healthcare provider.

How to Support Bone Health in Your 80s

• Get Adequate Calcium: Adults should aim for at least 1,000 milligrams of calcium daily. Women 51 and older, and men 71 and older, should increase this to 1,200 milligrams per day. Good dietary sources include dairy products, broccoli, kale, salmon, and tofu.
• Ensure Sufficient Vitamin D: Adults up to age 70 should get 600 international units (IU) of vitamin D daily. Starting at age 70, this recommendation increases to 700 IU. Foods like tuna, trout, salmon, and eggs are excellent sources. Spending time outdoors also helps, as the body naturally produces vitamin D when exposed to direct sunlight.
• Stay Physically Active: Regular physical activity supports bone health and can help maintain muscle strength and balance. Getting outside for a walk or jog combines exercise with natural vitamin D production, addressing two bone health needs at once.
• Discuss Hormone Therapy with Your Doctor: If you're a postmenopausal woman concerned about bone health, talk with your healthcare provider about whether menopausal hormone therapy might be appropriate for you, weighing both benefits and risks.

The key takeaway is that bone health in your 80s isn't inevitable decline. While some bone loss is a normal part of aging, taking steps now to maintain calcium and vitamin D intake, staying active, and exploring appropriate medical interventions like hormone therapy can make a meaningful difference in preventing fractures and maintaining independence as you age.