Answer Summary

Members discussing whether vitamin D deficiency mimics RA symptoms overwhelmingly confirmed that low vitamin D can cause bone pain and... Read more

Members discussing whether vitamin D deficiency mimics RA symptoms overwhelmingly confirmed that low vitamin D can cause bone pain and fatigue, with many sharing they were deficient before or after their RA diagnosis and now take daily supplements ranging from 2,000 to 10,000 IU. Several members described significant improvements in energy and pain after starting high-dose vitamin D, including one member whose specialist increased their dose to 3,000 mg daily with noticeable results, while another warned of serious complications like stress fractures from untreated deficiency. A recurring theme was that proper medical testing is essential to differentiate between vitamin D deficiency and RA, as many members found that correcting their vitamin D levels helped with fatigue and bone pain but did not eliminate their RA symptoms entirely.