头发断裂是怎么回事
从卷发到直发再到波浪发，有许多不同的头发类型。当头发开始断裂时，你可能会注意到卷曲或粗糙，特别是在末端或根部附近。但是为什么会这样呢?
First, we have to understand how hair grows. The hair that grows out of our scalp is made of dead cells, similar to our fingernails, according to Healthline. Strands of hair are called hair shafts or filaments, and they're mostly made from a protein called keratin. Each shaft grows from a hair follicle, which we have all over our bodies, except for places like our lips and palms. Each follicle contains a bulb, where blood vessels send nutrients and grow hair cells. As new strands of cells are made, the old ones get pushed out, which is what we see. So the new cells are rooted in the bulb while the old cells lengthen into strands of hair, which is why we can't feel pain when our hair is cut.
首先，我们必须了解头发是如何生长的。根据Healthline的说法，从头皮上长出来的头发是由死细胞组成的，与我们的指甲相似。一缕一缕的头发被称为发干或发丝，它们主要由一种叫做角蛋白的蛋白质构成。每根发丝都是由毛囊长出来的，毛囊遍布全身，除了嘴唇和手掌等部位。每个毛囊包含一个球茎，血管在那里输送营养物质并生长毛细胞。随着新的细胞链的形成，旧的细胞被挤出，这就是我们所看到的。因此，新的细胞扎根于鳞茎中，而旧的细胞则延伸成头发，这就是为什么我们剪头发时感觉不到疼痛的原因。
The follicles go through different stages, so at any given point, they may be actively growing, transitioning, or resting, which is when strands can fall out, according to Healthline. But what if breakage is a major issue?
据Healthline网站报道，毛囊会经历不同的阶段，所以在任何时候，它们都可能在积极生长、过渡或休息，此时头发可能会脱落。但如果锻炼情况很严重呢?
Even though the hair we see is technically dead, it still requires care. If it isn't getting the proper care, it can break. Here are a few reasons why.
即使我们看到的头发严格来说是死的，它仍然需要护理。如果没有得到适当的护理，它可能会破裂。以下是一些原因。
The products you use could affect the strength of your hair (via Medical News Today). Harsh chemicals found in things like colorants, relaxers, and even some shampoos can cause hair to become brittle and eventually break. The way you style your hair could also take a toll. Using too much heat from a hairdryer, straightener, or curling iron, can strip moisture and cause breakage. Over-brushing is another way the strands can snap. Additionally, styling your hair too tightly can cause strain on the root and ultimately breakage.
你使用的产品可能会影响你头发的强度。在诸如着色剂、松弛剂甚至一些洗发水中发现的刺激性化学物质会导致头发变脆并最终断裂。你的发型也会对你造成影响。使用吹风机、矫直机或卷发器产生的热量过多，可能会带走水分并导致断裂。过度梳理是发丝断裂的另一种方式。此外，发型设计太紧会导致发根拉伤，最终导致断裂。
Health and lifestyle factors can also affect your hair. Stress and anxiety, along with any severe trauma or shock, can damage the hair, according to Medical News Today. Thyroid disorders and eating disorders can also affect hair's health and the cycle of hair growth, leading to breakage and loss.
健康和生活方式因素也会影响你的头发。据《今日医学新闻》报道，压力和焦虑以及任何严重的创伤或休克都会损害头发。甲状腺疾病和饮食失调也会影响头发的健康和头发生长周期，导致头发断裂和脱落。
If you notice your hair starting to break, you can help repair and prevent breakage by getting regular haircuts, changing your hair care routine, reducing stress, and getting plenty of protein, omega-3s, iron, biotin, and zinc in your diet.
如果你注意到你的头发开始断裂，你可以通过定期理发、改变你的头发护理程序、减少压力、在饮食中摄入大量蛋白质、ω-3脂肪酸、铁、生物素和锌来帮助修复和防止断裂。
