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Taking a glucocorticoid medication (sometimes called corticosteroids) for treatment of inflammatory arthritis or other health problem may weaken your bones. This, in turn, can lead to osteoporosis. The good news is there are ways you can protect your bones while taking glucocorticoid medicine.
Glucocorticoid-induced osteoporosis is a form of osteoporosis that is caused by taking glucocorticoid medicines. These drugs include prednisone (Deltasone, Orasone, etc.), prednisolone (Prelone), dexamethasone (Decadron, Hexadrol), and cortisone (Cortone). They are common treatments of many rheumatic (joint and muscle) diseases, including rheumatoid arthritis, lupus, myositis (muscle inflammation), and polymyalgia rheumatica.
Glucocorticoid medications have both direct and indirect effects on bone tissue that lead to bone loss. These drugs have a direct negative effect on bone cells, resulting in a reduced rate of forming new bone. Also, they can interfere with the body's handling of calcium and affect levels of sex hormones. Either of these problems can lead to increased bone loss.
Anyone who is taking glucocorticoid medications and has other risk factors for osteoporosis increases their risk of developing glucocorticoid-induced osteoporosis and breaking a bone (fracture). You can change some of these risk factors, but not others.
Major risk factors that you cannot change include:
Risk factors that you may be able to change include:
You can learn if you have osteoporosis by having a simple test that measures bone mineral density - sometimes called BMD. BMD - the amount of bone you have in a given area - is measured at different parts of your body. Often the measurements are at your spine and your hip, including a part of the hip called the femoral neck, at the top of the thigh bone (femur). Dual energy X-ray absorptiometry (referred to as DXA and pronounced “dex-uh”) is the best current test to measure BMD.
The test is quick and painless. It is similar to an X-ray, but uses much less radiation. Even so, pregnant women should not have this test, to avoid any risk of harming the fetus.
DXA test results are scored compared with the BMD of young, healthy people. This information results in a measure called a T-score. The scoring is as follows:
The risk of fracture most often is lower in people with osteopenia than those with OP. But, if bone loss continues, the risk of fracture increases. Yet, people taking glucocorticoids seem to be at an increased risk of fracture at higher bone densities than would be expected.
How is glucocorticoid-induced osteoporosis treated?
As doctors who are experts in diagnosing and treating diseases of the joints, muscles and bones, rheumatologists can help find the cause of osteoporosis. They can provide and monitor the best treatments for this condition.
Anyone taking glucocorticoid medicine must get enough calcium and vitamin D. The American College of Rheumatology recommends you should take at least 1,200 mg of calcium and 800 to 1,000 International Units (called IU) of vitamin D supplements each day. Your doctor may measure the vitamin D level in your blood to find out if you need more vitamin D supplementation.
Some people also will need medication. The decision to start prescription medications will depend on your other risk factors, the dose of glucocorticoid medication you are taking and how long you may be on it, as well as your BMD results by DXA.
The US Food and Drug Administration (better known as the FDA) has approved certain drugs to prevent and treat glucocorticoid-induced osteoporosis. In a drug class called bisphosphonates, alendronate (Fosamax), risedronate (Actonel), and zoledronic acid (Reclast) are FDA approved for both the prevention and treatment of glucocorticoid-induced osteoporosis.
Teriparatide (Forteo), a different type of drug, also is approved for treatment of glucocorticoid-induced osteoporosis. This manmade form of parathyroid hormone helps stimulate bone formation.
Women planning a pregnancy should talk to their doctor about the pros and cons of using a bisphosphonate or teriparatide. None of the prescription drugs for managing osteoporosis has enough safety data available to recommend using them in women who are pregnant or breastfeeding.
If you take glucocorticoid medicine for any length of time, you should start taking calcium and vitamin D supplements at the doses recommended in the prior section. Work with your doctor to help use the smallest dose of glucocorticoid for the shortest duration possible that will still keep your disease under control.
Patients taking glucocorticoid medicine should:
If you have low bone density and a high risk of breaking a bone, your doctor may suggest medicine to prevent your bones from getting weaker. Health care providers now have a tool for estimating the risk of a patient having an osteoporotic fracture in the next ten years. This fracture risk assessment tool from the World Health Organization is called FRAX. It can help guide treatment decisions.
The most serious health consequence of any type of osteoporosis is a fracture. Spine and hip fractures especially may lead to chronic pain, long-term disability and even death. The main goal of treating glucocorticoid-induced osteoporosis is to prevent fractures.
Updated March 2019 by Marcy Bolster, MD and reviewed by the American College of Rheumatology Committee on Communications and Marketing.
This information is provided for general education only. Individuals should consult a qualified health care provider for professional medical advice, diagnosis and treatment of a medical or health condition.