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Why does fingernail still grow after losing? Why do nails grow fast?

As the saying goes, people have long nails. Although Xiaobian is not idle, his nails are really growing very fast. Why? Why do nails grow after they are cut? Let's have a look.

Why does fingernail still grow after losing? Why do nails grow fast?

In fact, at the tip of each finger, there is a place called nail root, which is the nail production factory. Nail is composed of a kind of hard keratin, which is evolved from epidermal cells, because epidermal cells are constantly metabolized from birth to death, so nail keratin will continue to generate, therefore, the nail does not stop growing.

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So, after people cut their nails, they can grow out. In addition, the growth rate of nails is not constant, it is affected by various factors, such as age, health and so on. People of different ages have different growth rates of nails. Generally speaking, the growth rate of fingernails in children is the fastest, followed by adults, and the slowest in the elderly, which is related to people's metabolism.

In addition, the ability of a healthy person's epidermal cells to synthesize keratin is significantly higher than that of a sick person. In addition to the above reasons, Xiaobian tells you that the growth rate of nails is also related to some habits. For example, people who love to bite their nails, or people who work with their hands and nails, such as hairdressers, their nails grow quite fast because of constant friction and stimulation.

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