导读:头发的粗细、多少、弯直、颜色等性状,有很大程度的遗传性。不过,如果和平常相比,头发的状态突然发生了明显的不正常变化,头发的脱落量比日常平均值明显增加,那通常是健康状态下降的表现。人们都知道,精神压力和情绪刺激会引起脱发,严重情况下甚至会大量脱发而导致局部头皮光秃的情况。另一方面,营养不良也会引起脱发。比如说,在明显缺乏蛋白质的情况下,头发不仅生长缓慢,还容易脱落,而且发质变差, REVIEW: the thickness of the hair, how much, straight, color and other traits, a large degree of heredity. However, if there is a sudden, unnatural change in the condition of the hair as compared to normal, the amount of hair shedding is significantly higher than the usual average, which is usually a sign of a decline in health. People all know that mental stress and emotional stimulation can cause hair loss, and in severe cases, even a lot of hair loss can lead to the baldness of the local scalp. On the other hand, malnutrition can cause hair loss. For example, in the case of a marked lack of protein, the hair not only grows slowly, but also sloughs easily and the hair becomes poor,