Estrogen to prevent fracture risk
Because estrogen deficiency is a key cause of postmenopausal osteoporosis, estrogen replacement therapy has been used to prevent this condition, particularly early in the menopausal transition (51-60 years). Different formulations of estrogen given via oral or transdermal routes have been demonstrated to prevent osteoporosis; transdermal estrogen is often preferred because of a lower risk for blood clots and stroke. Women who have an intact uterus should also receive a progestin preparation either daily or cyclically, because estrogen alone can increase the risk for uterine cancer in the long run. Estrogen replacement has been associated with a 34% reduction in vertebral, hip, and total fractures in women of this age group.
Sally Field did receive hormone replacement therapy, which was helpful for her bones. However, as typically happens, her bone density dropped again when she discontinued hormone replacement. She also had low vitamin D levels, but vitamin D supplementation was not helpful. She received other medical intervention, with recovery back to good bone health.
Raloxifene is a medication that acts on the estrogen receptor, with beneficial effects on bone, and is approved for prevention and treatment of postmenopausal osteoporosis.
Medications that reduce bone loss (antiresorptive drugs), such as bisphosphonates and denosumab, and those that increase bone formation (osteoanabolic drugs), such as teriparatide, abaloparatide, and romosozumab, are used alone or in combination in women whose osteoporosis doesn’t respond to lifestyle and preventive strategies. The osteoanabolic drugs are typically reserved for women at very high risk for fractures, such as those with a BMD T-score ≤ less than or equal to –3, older women with recent fractures, and those with other risk factors. Treatment is typically lifelong.
(such as fractures of the spine and hip). It’s important to recognize those at greatest risk for this condition; implement bone health monitoring in a timely fashion; and ensure optimal nutrition, calcium and vitamin D supplementation, and exercises that optimize muscle strength and balance. Hormone replacement therapy is a consideration in many women. Some women will require antiresorptive or osteoanabolic drugs to manage this condition. With optimal treatment, older women can live long and productive lives.
Dr. Misra is Chief, Division of Pediatric Endocrinology, Mass General for Children; Associate Director, Harvard Catalyst Translation and Clinical Research Center; Director, Pediatric Endocrine-Sports Endocrine-Neuroendocrine Lab, Mass General Hospital; Professor, department of pediatrics, Harvard Medical School, Boston. She has disclosed the following relevant financial relationships: Serve(d) as a director, officer, partner, employee, advisor, consultant, or trustee for: AbbVie; Sanofi; Ipsen.
A version of this article first appeared on Medscape.com.