Reviewer of this article: Zhou Xiaobo, Doctor of Medicine, Shanghai Jiao Tong University In daily life Have you ever seen such a strange phenomenon? Some middle-aged and elderly men The hair on the top of my head is so thin that it looks like a Mediterranean Sea. But the eyebrows are still very thick Copyright image, no permission to reprint Hair on a person Why is the difference so big? Come and see … turn out to be They are all male hormones in men —— Testosterone For hair follicles on the scalp and eyebrows The impact caused by different Hair grows from follicles Goes through growth, regression and resting phases Eventually falls off Then a new round Copyright image, no permission to reprint Because hair growth periods vary on different parts of the body The longest growth period of hair is generally 2-7 years. The growth period of eyebrows is only about 1-2 months. besides Hair growth is also affected by hormones in the body Especially men Excessive testosterone levels Hair grows faster But the strange thing is that Hair follicles on the scalp But it is opposite to the hair follicles in the eyebrow area. Facing higher testosterone levels Shortened growth cycle So there is the "Mediterranean Sea" above your head Thick eyebrows The cover of this article and the pictures with watermarks in the text are from the copyright library and are not authorized for reproduction |
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