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New Weapons to Fight Osteoporosis

Battling Brittle Bones

WebMD Feature

The bones of older women often get more and more brittle because they are becoming less and less dense. Osteoporosis is the disease name for this process, and people who suffer from it break bones more easily than normal.

For many years, women reaching menopause have been advised to take estrogen replacement therapy (ERT) or estrogen with a progestin (called hormone replacement therapy or HRT) to prevent this disease. But this meant taking hormones for 20-30 years -- which also has risks, including uterine cancer (with ERT alone), blood clots, gallstones, and possibly breast cancer.

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When you're nursing a broken bone, you may be tempted to rest safely on a sofa, day and night, until it's healed. Don't! Your recovery will go better if you follow your doctor’s orders and stay as active as possible. You may need to do things differently for a while. But the rewards for staying active are great. You'll build strength and protect your bones from weakening, says Robert Dorman, a physical therapist at Massachusetts General in Boston. Ease back into your home routine with these smart...

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There's good news, though: There may be other ways to prevent, and even treat, bone loss.

"In the past 5 or 10 years, we have recognized that osteoporosis is a very treatable disease," says Bruce Ettinger, MD, senior investigator in the research division of the Kaiser Permanente Medical Care Program in Oakland, Calif. "The old idea that you can't treat it, you can only prevent it, is out the window. We have new medications now that markedly reduce women's risk of fracture and we have other and perhaps even better medications coming soon."

Hormone Controversy

A June 13, 2001 Journal of the American Medical Association (JAMA) editorial notes that the estrogen therapies prevent postmenopausal bone loss but also that other drugs (even calcium and vitamin D) decrease the risk of fractures independently of how dense or porous a woman's bones are. For that reason they are approved by the FDA not just to prevent osteoporosis but also to treat it.

One class of drugs, the bisphosphonates -- including alendronate (Fosamax) and risedronate (Actonel) -- prevents spine, hip, and other fractures. So-called SERM (for selective estrogen receptor modulator) drugs -- including tamoxifen (Nolvadex) and raloxifene (Evista) -- increase bone density and reduce spinal fractures but not hip fractures. They may increase the risk of blood clots and hot flashes, but some reduce breast cancer risk.

Raloxifene is the SERM that is FDA approved for osteoporosis therapy. Calcitonin increases bone density in the spine and reduces the risk of spinal fractures but does not seem to reduce fractures of the hip and other bones. When injected, it may cause an allergic reaction, urinary frequency, or nausea in some people, though these side effects were not reported when calcitonin was taken as a nasal spray.

Statins like Zocor (simvastatin), Mevacor (lovastatin), and Pravachol (pravastatin) may lower the risk for hip and other fractures, may help improvej cholesterol levels, and may reduce heart attack and stroke risk, but are not yet FDA-approved for osteoporosis therapy.

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