Coeliac Disease and Your Bones: Osteoporosis Risk and What Helps

One of the quieter effects of coeliac disease happens where you can’t feel it: in your bones. For years before diagnosis, a damaged gut may have struggled to absorb the calcium and vitamin D that keep bone strong — which is why lower bone density is a recognised association with coeliac disease. The reassuring news, and the throughline of this page, is that bones tend to respond well once the gut heals. Here’s what the risk really means, when a bone scan comes into it, and what helps most.

Why coeliac disease affects your bones

Bone is constantly being broken down and rebuilt, and that rebuilding needs a steady supply of calcium and vitamin D. Both are absorbed mainly in the upper part of the small intestine — which is exactly where coeliac damage tends to concentrate. So in undiagnosed or untreated coeliac disease, the body can quietly run short of the raw materials bone needs. Over time that’s linked to lower bone density, and lower bone density can mean a higher chance of fractures. It’s an association and an increased risk, not something that happens to everyone with coeliac disease.

Osteopenia and osteoporosis — what the words mean

These two terms describe points on the same scale of bone density:

• Osteopenia means bone density is somewhat below the typical range — a signal to pay attention, not an illness in itself.
• Osteoporosis means bone density is low enough that bones are more fragile and more likely to break.

Neither causes symptoms on its own — you can’t feel your bone density — which is why it’s picked up on a scan rather than through how you feel. And crucially, both can improve. Seeing one of these words on a report is information to act on, not a verdict.

Will I need a bone-density (DEXA) scan?

Maybe — and this is where a lot of worry can be put to rest. A DEXA scan is a quick, low-dose X-ray that measures bone density. In line with NICE and British Society of Gastroenterology guidance, it’s arranged on a risk basis rather than routinely for every person with coeliac disease. Your team weighs things up: your age, whether you’ve broken a bone before, whether you’ve been through the menopause, how long the coeliac disease went undiagnosed, and how well your gut has healed on the diet.

So if you’re young, newly diagnosed and otherwise well, you may not need a scan straight away — while someone with added risk factors might be offered one sooner. There’s no single rule that fits everyone, which is exactly why this is a conversation to have with your GP or gastroenterologist rather than something to assume either way.

The good news: bones can recover

Here’s the part worth holding onto. Once you’re on a strict gluten-free diet, the gut lining heals and starts absorbing calcium and vitamin D properly again — and bone density commonly improves as a result. The gains tend to be greatest in the first year or two, and often most marked in children and younger adults, whose bones are still actively building. Correcting any calcium or vitamin D shortfall and staying active help the diet along.

For most people, that combination — diet, nutrients, movement — is enough to turn things in the right direction. Where bone density is already low, a doctor may add bone-protective treatment and repeat a scan down the line to track progress. Either way, this is a manageable, monitorable part of coeliac disease, not a runaway one.

What helps your bones

The gluten-free diet comes first

Everything else builds on this. A strict, lifelong gluten-free diet — food at or below the Codex standard of no more than 20 ppm (20 mg/kg) of gluten — lets the gut heal so it can absorb minerals again. Without that foundation, calcium and vitamin D have a harder time getting where they’re needed.

Calcium and vitamin D

Calcium is the main building block of bone, and vitamin D is what helps your body absorb and use it. Coeliac UK generally advises adults with coeliac disease to aim for around 1,000 mg of calcium a day, with some groups — such as those past the menopause or over 55 — advised to aim higher. Levels of vitamin D are usually checked at your annual review, and a supplement is common, especially through the winter. A coeliac-aware dietitian can tailor the numbers to you rather than leaving you to guess.

Movement, and the everyday things

Bone responds to being used. Weight-bearing and resistance activity — walking, jogging, dancing, stair-climbing, light strength work — signals bone to hold onto its density, so doing what you can, as your ability allows, genuinely helps. Not smoking and keeping alcohol modest matter too, since both work against bone over time. None of these has to be dramatic; small, steady habits add up.

Monitoring that fits you

Your annual coeliac review keeps an eye on the bigger picture — antibody levels, nutrition and general health — and a DEXA scan is added where guidelines advise it. If you’ve had a scan, a repeat later on can show how your bones are responding to the diet. This is the quiet safety net that catches anything needing a closer look.

What supports bone health, at a glance

Keep exploring

• Coeliac Disease Beyond the Gut — the whole-body map this page is part of.
• Coeliac Disease and Your Skin — dermatitis herpetiformis, explained.
• Coeliac Disease and Your Teeth — enamel defects and mouth ulcers.
• Coeliac Follow-Up Care — your reviews, blood tests and nutrient checks, explained.
• Your First 90 Days With Coeliac Disease — settling into the gluten-free diet, step by step.
• Coeliac Diagnosis & Medical FAQ — common questions around testing and diagnosis.

Frequently asked questions

This page is general information, not medical advice. Coeliac disease and bone health are individual, and the points here are associations and risks rather than certainties — discuss your own situation, and any scans or supplements, with your GP, gastroenterologist or a coeliac-aware dietitian.

Sources & standards: Coeliac UK (bone health, calcium and the gluten-free diet); NICE guideline NG20 (coeliac disease: recognition, assessment and management); the British Society of Gastroenterology (BSG) guidelines on the diagnosis and management of adult coeliac disease, including bone-density assessment; the Codex Alimentarius gluten-free standard of no more than 20 ppm (20 mg/kg) of gluten; and AOECS (Association of European Coeliac Societies). Last verified: 2026-07-21.