Grayhairissimplyapartofthenormalagingprocess,andtherate...
問題詳情：Grayhairissimplyapartofthenormalagingprocess,andtherateyougosilverisgeneticallypredetermined.Goinggrayisnotassociatedwithearlierdeath,andprematuregrayingisnot,generallyspeaking,asignofanillnes...