What mineral deficiency causes grey hair? A guide to diet and hair health
                                
                                
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                                    5 min read                                
                            
                                While genetics are a primary factor, a 2018 study in the *International Journal of Trichology* found a correlation between low levels of iron, copper, and calcium with premature hair graying. Addressing **what mineral deficiency causes grey hair** involves understanding your body's nutrient needs and the role of melanin.