Name: 為什麼有些男人不能長鬍子 (Why Some Men Can't Grow Beards)
Uploaded: 2021-01-14T08:07:43.000Z
Duration: 3 min 10 s
Description: 【看影片學英語】數萬部 YouTube 影片，搭配英漢字典即點即查，輕鬆掌握單字發音與用法，長久累積看電影不必再看字幕。

This is my beard, if you even want to call it a beard.

This footage was taken after I let it grow for two weeks.

and in some spots there's no hair at all.

about why he's able to grow a beard and I'm not.

Dr. Chwalek: It's based on genetics as well as hormones.

Some men, you know, have more hair follicles,

so they can grow denser, coarser beards than others.

Testosterone gets converted in the hair follicle

to a more potent form called dihydrotestosterone.

to this higher form of testosterone, dihydrotestosterone,

Graham: How would you characterize my facial hair?

Graham: I can't really grow a great beard.

I want one. I wanna look like my colleague, Kevin.

Dr. Chwalek: Well, Kevin has some good hair genes,

called dihydrotestosterone which can help

to stimulate thicker, coarser, longer hair growth

in some areas of the body like the beard area.

have long been associated with masculinity and virility.

Graham: Does the fact that I can't grow a beard,

does it make mean that I have low testosterone?

Dr. Chwalek: No. Men who can't grow a beard

It isn't a reflection of having low testosterone

Graham: And grow a crappy beard like this?

Narrator: And in fact, there are some ways

to increase the chances of growing facial hair,

but shaving more often isn't one of them.

can impact hair growth is actually a myth.

When you're shaving, you're just cutting the hair off

on how quickly the hair grows, or how dense the hair grows.

People have tried topical Rogaine or Minoxidil.

These things may stimulate a little hair growth,

then you're kind of stuck with what you have.

Graham: It's all about the sensitivity of the hair follicles

Dr. Chwalek: Dihydrotestosterone or androgens in the blood.

Graham: They aren't sensitive. They're like rocks.

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為什麼有些男人不能長鬍子 (Why Some Men Can't Grow Beards)

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