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Bone Health Glossary · Risk & causes

Inflammatory bowel disease

Also called: IBD

Evidence
✓ Established Science
Topic
Risk & causes
Taught in
Tier 2 · Lesson 6
In plain English

What it means

Inflammatory bowel disease (IBD) covers conditions like Crohn's and ulcerative colitis, where gut inflammation and poor nutrient absorption together raise the risk of bone loss.

Why it matters for your bones

If you have IBD, your bones may be losing ground through inflammation and poor nutrient absorption even before any symptoms show up, so it's worth getting checked.

Inflammatory bowel disease (IBD) is a term for conditions like Crohn's disease and ulcerative colitis, where the gut lining is chronically inflamed. This matters for bone health in two main ways. First, the inflammation itself produces signalling molecules that ramp up osteoclast activity, the cells that break down bone, which is why IBD is recognized as a bone risk factor. Second, the damaged gut lining can reduce how well you absorb calcium, vitamin D, and other nutrients your bones depend on.

Repeated courses of steroids, sometimes used to manage IBD flares, add another layer of risk to bone over time. Taken together, inflammation, malabsorption, and steroid use can overlap and compound each other, which is why people with IBD are watched more closely for bone density changes than the general population.

If you have IBD, or a family history of it, and you're dealing with unexplained bone loss, it's worth raising this with your physician rather than trying to piece it together yourself. Useful things to ask about include a vitamin D check, magnesium, ferritin and B12 levels, and whether your calcium intake or form needs adjusting. Steer clear of expensive direct-to-consumer panels like food-sensitivity tests, which aren't shown to change treatment and can lead to unnecessarily restrictive eating.

Evidence

How sure is this?

The research behind this
Established Science

Graded Established Science: Supported by broad scientific consensus and decades of research. Read each study with its grade in mind. One study is a piece of the picture, not the whole of it.

3 peer-reviewed studies, free with an Academy login
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Where the Academy teaches it

This page is the short version. The lessons teach it in full, with the context around it and a quiz to lock it in.

Quick answers

Questions people ask about this

Bone risk usually isn't one single thing — it's a mix of up to six categories: not enough mechanical loading, poor nutrition, hormonal shifts, diseases that directly affect bone cells, certain medications, and lifestyle habits like smoking, alcohol, poor sleep or stress. Most people have threats stacked in at least two of these areas at once, which is why figuring out your own combination matters more than focusing on just one cause.

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Related words

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Corticosteroid
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Corticosteroids like prednisone and dexamethasone are anti-inflammatory medications that, especially with long-term…

Vitamin D
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Vitamin D is a nutrient that helps your gut absorb calcium so it can be used to build and maintain bone.

Education only, not medical advice. Decisions about tests, medications and treatment belong with your own doctor. OsteoStrong does not diagnose, treat or cure any disease.

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