Biotin: The Key Vitamin Deficiency That Causes Soft Bendy Nails
                                
                                
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                                    1 min read                                
                            
                                According to the National Institutes of Health, biotin deficiency can cause symptoms such as hair loss and brittle nails. While genetics and overexposure to moisture play a role, a significant vitamin deficiency causes soft bendy nails in many people.