脱发的原因因人而异,通常和饮食、压力、遗传有关……
其中,遗传性脱发占比不少。
Hair loss can be hereditary. Hereditary hair loss is called androgenetic alopecia, or for males, male pattern baldness, and for females, female pattern baldness.
脱发有可能是遗传性的。遗传性脱发又称为雄激素源性脱发,分为男性雄性脱和女性雄性脱。
这种脱发男女表现形式还不一样,男性一般从发际线往后脱,女性则是弥散性地脱。
Androgenetic alopecia occurs when a hair follicle sheds, and the hair that replaces it is thinner and finer than what was there previously. The hair follicles continue to shrink and eventually hair stops growing altogether.
遗传性脱发的过程是毛囊脱落,新长出的头发比之前更细软,毛囊逐渐萎缩,最终头发停止生长。
It can be passed down from either the mother's or father's genes – but is more likely to occur if both parents have this issue.
父母的脱发基因都可能遗传给下一代,如果父母双方都脱发,下一代脱发的可能性更高。
所以家里直系亲属有脱发史的,过了20岁,都可以着手预防起来了……
如果分性别来说的话,女生掉头发可能有以下几个原因:
► Poor nutrition and low iron levels. 营养不良、缺铁。
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