What are the long-term side effects of steroids (cortisone), and how can they be limited?
Steroids such as prednisolone are excellent at calming a flare quickly, but they are not meant for long-term use. Taken at higher doses or for more than a few weeks, they can thin the bones (osteoporosis), raise blood sugar, increase the risk of infection, and affect mood. This is why IBD teams use them as a short course to settle a flare rather than as a maintenance drug. You should also never stop them suddenly; the dose is lowered step by step under medical guidance.
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Corticosteroids such as prednisolone are one of the fastest ways to bring a flare under control, and they are very good at that job. The catch is that the longer you take them, and the higher the dose, the more likely side effects become. That is why they are a short-term tool, not a long-term one.
The main long-term effects
- Bones. Long-term steroid use can thin the bones, a condition called osteoporosis (MedlinePlus; NHS).
- Infection. Steroids lower the body's ability to fend off infection and can hide its early signs, so an infection may set in less noticed (MedlinePlus).
- Blood sugar. Long-term use can lead to poorly controlled diabetes or raised blood sugar (NHS).
- Other effects. Mood changes, raised blood pressure, eye problems, and weight gain can also occur (NHS).
Why they are not a maintenance drug
Because of these risks, steroids are used as a short course to settle a flare, not to keep you well month after month. Keeping you in remission is the job of other treatments, such as immunosuppressants or biologics. If you find you need steroids again and again, that is usually a sign your team needs to review your maintenance plan.
How the risks are limited
- The lowest effective dose for the shortest time needed.
- Never stop suddenly. After more than a few weeks the dose is reduced gradually, because the body needs time to restart its own steroid production (MedlinePlus; NHS).
- Bone protection. Teams often look at calcium, vitamin D, and bone health for people who need repeated courses.