The full answer
Yes — reduced bone density is a recognized long-term risk
Poor calcium and vitamin D absorption from untreated celiac disease can lead to reduced bone density over time, increasing the risk of osteoporosis and fractures, particularly if celiac disease went undiagnosed for years.
Why treatment helps, but monitoring still matters
A strict gluten-free diet allows nutrient absorption to normalize and bone density to improve over time, but doctors may still recommend a bone density scan, especially for those diagnosed as adults — this is often discussed alongside other nutrient deficiency follow-up.
Important context
Individual symptoms, reactions, medical histories, food products, and local labeling rules can vary. Community experiences are not medical evidence.
For personal medical decisions, diagnosis, testing, or treatment, consult a qualified healthcare professional.