The short answer: does rheumatoid arthritis cause osteoporosis?
Yes. Rheumatoid arthritis is linked with weaker bones and a higher chance of fracture. A meta-analysis of 13 studies found that people with rheumatoid arthritis had about 2.25 times the fracture risk of people without it [1]. The cause is a mix of inflammation in the body itself, steroid tablets taken over months, and general factors such as menopause and low activity [2][3][9].
The good news is that bone risk can be measured and managed. The usual steps are a bone density scan, an estimate of your ten-year fracture risk, and a review of the result with your rheumatologist so the plan fits your situation [5].
This article separates three conditions people often mix up: rheumatoid arthritis, osteoarthritis (joint wear), and osteoporosis (fragile bone). It then explains the numbers, why bone weakens, the role of steroids, how risk is assessed, what helps bone through food and movement, questions to ask your doctor, and when to book a visit.
Rheumatoid, osteoarthritis or osteoporosis: three different conditions
Rheumatoid arthritis is a long-term autoimmune disease in which the body attacks the lining of the joints. It causes pain, swelling and morning stiffness, usually in the small joints on both sides of the body. Osteoarthritis is different: it is wear of the cartilage with age or extra load, and it is not autoimmune.
Osteoporosis is a third thing. The bone itself becomes less dense and easier to break. The NHS describes it as weakening bones so that they are fragile and likely to break, with the wrist, hip and spine being the common fracture sites [10]. A person can have all three conditions at once, but each one is checked and treated in its own way.
In everyday speech, "rheumatism" is a broad umbrella covering many diseases, including rheumatoid arthritis, gout and others. It is not a single diagnosis. So the question of which is more dangerous cannot be answered before the exact diagnosis is known, and that is decided by a rheumatologist's examination and blood tests.
New back pain in someone with fragile bone is not the same as inflammatory joint pain. The first may mean a collapsed vertebra, while the second goes with swelling and stiffness. To understand joint pain and when it needs a specialist, read our article on joint pain, and to see who needs a density scan, read our bone density article [10].
Read also: When joint pain needs a rheumatologist
How much does fracture risk really rise? The numbers
The clearest figure comes from a meta-analysis of 13 studies. The overall relative risk of fracture was 2.25 (confidence interval 1.76 to 2.87), meaning people with rheumatoid arthritis broke bones about twice as often as people without it [1].
The rise was clearest in the spine, with a relative risk of 2.93, and in the hip, at 2.41 [1]. By sex it was 1.99 in women and 1.87 in men, so the risk is raised in both sexes and not only in women [1].
How should these numbers be read? A relative risk does not mean every patient will fracture. It compares two groups. Double the risk means your chance is higher than average for people of your age, but the absolute chance still depends on your age, sex, fracture history and steroid use. That is why risk is calculated for each person rather than by one rule for everyone [6].
Pooled analyses also rest on observational studies. They show a strong and consistent link, but they cannot fully separate the effect of the disease from the effect of its medicines and the patient's lifestyle. So we treat the figure as a signal to check and follow up, not as a verdict on one individual.
Why does bone weaken in rheumatoid arthritis?
Bone is living tissue that is constantly broken down and rebuilt. In rheumatoid arthritis the balance tips toward breakdown. Inflamed cells release substances such as interleukin-1, interleukin-6, interleukin-8 and tumour necrosis factor alpha, and these activate the cells that remove bone, partly through a signal called RANKL [2].
A newer idea is that the disease-specific autoantibodies, such as rheumatoid factor and anti-citrullinated protein antibodies, may contribute to a body-wide thinning of bone, possibly even before joint inflammation starts [2]. Researchers have also suggested that bone density could serve as a marker of disease severity in early arthritis [2].
Local inflammation around a joint erodes the bone next to it, but osteoporosis reaches the spine and hip far from the inflamed joints. This is why controlling joint pain alone is not enough, and the bone has to be looked at separately.
In a study of 11,412 patients with rheumatoid arthritis, use of tumour necrosis factor inhibitors was linked with a lower risk of vertebral fracture only, with a hazard ratio of 0.72, and the same effect was not seen for other fractures [3]. This is an observational result. It does not mean one drug protects bone, and it is not used to choose treatment. Choosing a medicine is your doctor's decision, based on disease activity.
Steroids and bone: what the studies say
Oral steroids are sometimes used to calm rheumatoid arthritis, and they are among the best-known causes of osteoporosis. The NHS lists long-term high-dose steroid tablets as a risk factor for the condition [9].
In a study of 11,412 patients with 914 fractures, fracture risk rose with steroid use of three months or more: a hazard ratio of 1.26 with doses under 7.5 mg per day, and 1.57 with 7.5 mg or more [3]. So risk rises with dose, but it is present even at low doses.
In another study of 15,123 patients aged 50 or older, current low-dose use (7.5 mg or less of prednisolone equivalent) compared with past use carried a hazard ratio of 1.14 for fractures overall, an increase that did not reach statistical significance, but clinical vertebral fractures rose with a hazard ratio of 1.59 [4].
The American College of Rheumatology guideline advises assessing fracture risk soon after starting steroids at 2.5 mg per day or more for over three months [5].
One rule has no exceptions: do not change, reduce or stop your steroid dose, or any other medicine, on your own. Stopping suddenly can cause harm, and the dose is a decision for the doctor who prescribed it, who balances disease control against bone protection.
Other factors that add to the risk
Rheumatoid arthritis and steroids are not the only drivers. The NHS lists rheumatoid arthritis itself as a risk factor, alongside menopause, when oestrogen falls and bone density drops quickly, early menopause before age 45, long periods of inactivity, a body mass index of 19 or less, smoking, heavy drinking, family history, and coeliac and Crohn's disease [9].
People with rheumatoid arthritis sometimes move less because of pain and fatigue, so inflammation and inactivity add together. Better control of disease activity helps movement, and movement helps bone.
The study of 11,412 patients also linked some other medicines to fractures: weak opioids (1.37) and strong opioids (1.53), and antidepressants of the SSRI type (1.37). Proton pump inhibitors showed no association [3]. These are observational links and may reflect the medicine, the patient's condition, or falls. They do not mean you should stop anything. The best step is to review the whole medicine list with your doctor.
Falls are the last link in the chain: fragile bone is more dangerous when balance, muscle or eyesight is poor. That is why a risk review asks about falls, and prevention covers muscle strength, balance and the home environment.
How risk is assessed: the scan and the fracture risk tool
Assessment starts with your history and examination, then a bone density scan. The NHS says a scan is offered after a fracture from a minor fall, with inflammatory joint conditions, after oral steroids for three months or more, and with early menopause [8].
The scan itself is done outside the clinic, at an imaging centre, and the result comes back to us to review with you and plan treatment. The density score is read like this: -1 or higher is normal, -1 to -2.5 is low bone mass, and -2.5 or lower is osteoporosis. These scores apply to postmenopausal women and men aged 50 or older [7].
Next comes the fracture risk tool, which covers ages 40 to 90. Its inputs include age, sex, weight and height, a previous fracture, a parent's hip fracture, smoking, alcohol, a rheumatoid arthritis option that is ticked yes only for a confirmed diagnosis, and a steroid option that means current oral use, or about 5 mg per day of prednisolone or more for over three months. A femoral neck density measurement is optional [6].
The American College of Rheumatology guideline advises combining clinical assessment with a density scan plus spine imaging, using the tool for adults aged 40 and over, and treating medium, high or very high risk through shared decision-making with the patient [5].
What happens after the result is explained in our article on treatment after a bone density result.
Read also: Treatment after a bone density result
Calcium, vitamin D and movement
The reference daily intake of calcium is 1,000 mg for adults aged 19 to 50 and men 51 to 70, and 1,200 mg for women over 50 and men over 70. For vitamin D it is 600 IU (15 mcg) from age 1 to 70, and 800 IU (20 mcg) after 70. NIAMS advises talking to a provider before taking supplements [11].
It is better for calcium to come from food first, and supplements should be decided only after counting what you already eat. Vitamin D has an upper limit: the NHS suggests 10 mcg a day, with an upper limit for adults of 100 mcg (4,000 IU) a day, and too much can be harmful [12]. So do not start high doses without a blood test and advice.
Movement means weight-bearing exercise, resistance training and balance training [13]. If you have osteoporosis or physical limits, talk to your doctor before starting [13]. In rheumatoid arthritis, exercise is chosen according to disease activity: do not force an inflamed joint, and build up gradually.
Physiotherapy is an external service, and we refer you when you need a suitable programme. The clinic has an InBody body composition device to follow muscle and fat. If you are losing weight with a medicine or a diet, read our article on bone health during weight loss.
Read also: Bone health during weight loss with Mounjaro
Questions to ask your rheumatologist
A good visit starts with good questions. Take this list with you:
• Has my bone density been checked, and when should it be repeated? Guidelines advise assessing risk early in people taking steroids [5]. • What is my ten-year fracture risk by the risk tool, and what raises it [6]? • Is my steroid needed at the current dose and length? Ask, and do not change anything yourself [3][5]. • Does my bone need medicine, or is follow-up with nutrition and movement enough? The decision is shared between doctor and patient [5]. • Am I low in vitamin D, and what dose is safe for me if I need a supplement [11][12]? • Which exercises suit my joints, and do I need physiotherapy [13]? • Do my other medicines, such as strong painkillers or antidepressants, affect my risk of falling [3]?
Write down the answers and bring earlier results and your full medicine list. This saves time and makes the plan more precise.
When to book, and where to find us
Book a visit if you have rheumatoid arthritis, or suspect it, and your bones have not been assessed; if you have taken steroids for months; if you have reached menopause age; or if you have lost some height.
Symptoms that need prompt assessment are new, severe back pain without a clear cause, or a fracture after a minor fall, since these can signal a spinal fracture [10][8].
At La Rose Clinics we offer rheumatology, nutrition and weight management in Maadi and Fifth Settlement, and internal medicine in Maadi only. Bone density scans and physiotherapy are done outside the clinic, and we review the result with you and plan treatment. We do not have cardiology, endocrinology, nephrology or surgery departments.
• Maadi: 14 El-Mokhtar Street, behind QNB, New Maadi. • Fifth Settlement: CMC Medical Mall, 4th floor, North 90th Street, Wednesdays from 3:30 pm.
Use the booking page to set your appointment.
Read also: Book your appointment
