Vitamin D Deficiency and How It Causes SI Joint Pain
                                
                                
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                                    4 min read                                
                            
                                According to a global study published in *Clinical and Experimental Rheumatology*, over 50% of patients with spondyloarthritis, a condition that can cause sacroiliitis, had a vitamin D deficiency. While SI joint pain can arise from multiple causes, vitamin D deficiency is a key nutritional factor that can exacerbate or contribute to this painful condition.