Hi there and welcome
to Brain Stuff.
The show where we take your
questions and get you answered.
I'm Jonathan Strickland.
And I'm Lauren Vogelbaum.
And Lauren, I understand you
have a question for me today.
Yeah, this one came
in from the viewers.
Oh, fantastic.
Let's see, how quickly
does hair grow?
You picked this one, didn't you?
No.
Well, what a great question
that we're very happy to have.
Typically, hair grows at a
rate of about half a millimeter
per day for some of us.
It grows for you too.
Yeah, just not in the
places where I want it to.
But typically, half
a millimeter per day.
How long does that equal
out to in a new year?
Let's see, that would
be roughly six inches.
So how long did it
take you to grow that?
About four years of my life.
Anyway, half a millimeter
per day is about average.
That tends to be about
half an inch per month.
Now that can change depending
upon your genetics, your age,
what hormonal state you're in.
For example, pregnancy
can have an affect
on the rate of hair growth.
But have a millimeter
is a good average.
Well I hope that
answers your question.
If you guys have a
question, comment,
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We look forward to hearing
from you really soon.
Can't wait to get all
those awesome questions.
