Nutrition Diet: Unpacking the Complex Answer to 'What deficiency causes club nails?'
                                
                                
                                •
                                
                                
                        
                                    
                                    4 min read                                
                            
                                According to studies, digital clubbing is a rare clinical sign that typically indicates a more serious, underlying health issue. While a direct and common answer to 'What deficiency causes club nails?' is complex, this symptom is most often a signal of systemic problems rather than a single nutritional deficit.