中年人未老先衰的信号之一是“华发早生”.这种毛发早白的原因何在?有没有什么食物可以防治呢?要弄清毛发变白的原因,须先谈谈黑发的由来.如果毛发的中心层——髓质与毛发主体层——皮质中含有的黑色素颗粒多,头发 Middle-aged people are not old, one of the signals is “Huafa early.” What is the reason for such hair whiteheads? Is there any food can prevent it? To understand the reasons for hair whitening, must first talk about the dark hair If the central layer of hair - medulla and hair main layer - the cortex contains more melanin particles, hair