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Rebuilding your bones after steroids: what actually works
If you are taking prednisone or another corticosteroid for a condition like rheumatoid arthritis, lupus, asthma, or COPD, there is a good chance you have wondered what steroids are doing to your bones. It is one of the most common concerns among people in the Sam community, and an important one. Between 30 and 50% of people on long-term steroids develop osteoporosis (a significant thinning/weakening of the bones that increases fracture risk). The good news is that this is largely preventable, and for many people, partially reversible. You do not have to simply accept it as part of your treatment.
Why do steroids affect bones?
Steroids affect bone in two ways at once. They speed up the natural breakdown of bone tissue while making it harder for your body to build new bone. They also reduce the amount of calcium your gut can absorb and increase how much you lose through urine. Your body responds by releasing a hormone called PTH (parathyroid hormone), which pulls calcium out of your bones to keep blood levels normal. Over time, this takes a real toll. Bone loss is fastest in the first year of treatment, and up to 10 to 20% of spinal bone mass can be lost in that window alone.
"Bone loss from steroids can begin within the first three months of treatment - but it is largely preventable with the right steps."
Top tips for protecting and rebuilding your bones
Here are five practical, evidence-based things you can do to protect your bones and support recovery.
1. Keep moving with the right kind of exercise
Moving your body in the right way is one of the most effective things you can do for your bones. The American College of Rheumatology (ACR) 2022 guidelines recommend weight-bearing and resistance exercise for anyone taking steroids long-term. In practice, this means impact activity most days - brisk walking, stair climbing, or jogging - plus resistance training such as light weights or resistance bands two to three times a week. Regular balance work, such as tai chi, is also valuable for reducing fall risk, which matters just as much as building bone density.
2. Focus on your nutrition
Steroids reduce the calcium your body absorbs from food, so your daily targets are higher than for the general population. The ACR 2022 guidelines recommend:
- Calcium: aim for 1,000 to 1,200mg a day from all sources. Prioritize food where possible, and if you take supplements, smaller doses of 500 to 600mg at a time are better absorbed than a single large dose.
- Vitamin D: 800 to 1,000 IU a day. Ask your doctor to check your blood levels with a simple test; deficiency is very common, particularly in people with COPD.
- Protein: aim for around 0.45 to 0.54g per pound of body weight each day. If you have COPD and have lost muscle mass, 1.2-1.5g/kg is a better target. Adequate protein supports both bone recovery and the muscle strength that protects you from falls.
3. Ask about medications that actively rebuild bone
There are two types of bone medication. Antiresorptive medications, such as bisphosphonates (like alendronate) and denosumab, slow bone breakdown. Anabolic medications, such as teriparatide and romosozumab, actively stimulate new bone to form.
In steroid-induced osteoporosis, the ACR 2022 guidelines now favor anabolic medications as a first choice for people at higher fracture risk. The evidence for teriparatide is particularly strong: in a direct trial against alendronate, it produced an 11% increase in spinal bone density over 36 months and reduced new spinal fractures by 90% at 18 months (Saag et al., NEJM, 2007). Effective treatments exist; it is worth asking your doctor which approach is right for you.
4. Monitor your bones and track your symptoms
A DEXA scan (bone mineral density scan) helps your doctor accurately measure bone density and spot problems early. The ACR 2022 guidelines recommend a baseline DEXA scan at the start of long-term steroid treatment, repeated every one to two years. Your doctor can also use the FRAX tool (fracture risk assessment tool) to estimate your ten-year fracture risk and decide whether medication is needed.
5. Track your symptoms with Sam's Journey Tracker
One of the most valuable things you can do is keep a record of how you are feeling over time. Using Sam's Journey Tracker to log your symptoms, energy levels, and any changes in your mobility helps you and your doctor spot patterns early and have more informed conversations about your care. Many Sam visitors find that having this record gives them more confidence when talking to their doctor about bone health concerns.
How long does recovery take?
Fracture risk starts to fall as soon as you stop steroids and, for many people, approaches normal within about a year. With medication, bone density can return close to where it was before steroid treatment within 9 to 15 months. Full recovery after prolonged high-dose treatment is harder to achieve, but meaningful improvement is possible for almost everyone. It is also worth knowing that bone treatment should continue for six to twelve months after stopping steroids before your doctor reassesses whether it is still needed.
"With the right treatment, most people taking steroids can protect their bones and meaningfully recover what has been lost."
The bottom line
Steroids are highly effective for managing many inflammatory and autoimmune conditions, but their impact on bone health is real and should not be ignored. By staying active, eating well, getting monitored regularly, and asking about medication when needed, you can make a genuine difference.
Use Sam's Journey Tracker to record your symptoms and share them with your care team. Small changes, tracked consistently, add up to better conversations and better care.
Remember, always consult your doctor before making any changes to your medication or lifestyle to ensure the best care for your specific health needs.