Do hormones make Male kids hair grow faster?

[BlackLetterDay]

Or is ds1 an anomaly. Just wondering if it's a thing that has passed me by.

[JoJoSM2]

Look at the percentile charts. Is his growth out of whack or roughly following the curve?

[Em3978]

My DS's hair is growing faster than he is!
Haircut for going back to school took 3-4 inches off! He'd had it cut 6 months before. 1/2 and inch a month at least.
I thought hair was meant to grow at 1/4 inch a month.

[Em3978]

DS is just coming up 13 btw.