Which vitamin deficiency causes aphthous ulcers? Understanding nutritional and other factors
                                
                                
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                                    5 min read                                
                            
                                Affecting up to 20% of the population, recurrent aphthous stomatitis is a common and painful condition characterized by mouth ulcers. Evidence suggests a key factor in its onset is **which vitamin deficiency causes aphthous ulcers**, with several studies confirming links to specific nutritional shortfalls.