Why if you don't cut your hair it will keep on growing but your other body hair reaches a limit and stops?

Answer 1

It depends on the hair. Hair on your arms grows more slowly once it is long enough to stimulate the nerve at the base. This same thing happens with wiskers on cats. Neither the hair on your head nor a man's beard have this characteristic and will keep growing. Hair does eventually wear out and usually you can see fraying at the tips of long hair. Remember that the hair begins to deteriorate as soon as it leaves the follicle. The length of time that it takes to break down is the limit to how long it can get. This depends on the thickness of the hair and how fast it grows.Thick, fast growing hair can get longer than thinner, slower growing hair. And, yes, hairs do stop growing and fall out but this doesn't happen often enough to be the overriding factor for non-seniors. Hair will normally fall out more often as we get older (thinning hair).

Answer 2

It's a good question. Also, how is it that your body knows how long a hair is?

I suppose it could be since we bathe and shower regularly, the body naturally sheds hairs and skin. So likely we're rubbing off hairs that are "too long" without even knowing it, thus keeping hair lengths about even. I wonder what would happen if for several months we didn't shower, shave, wash with soap, or basically even touch the hairs (of course then you'd have to sleep, where you roll over and toss about, which might catch hairs that have gotten too long).

So basically, I'd assume the body has a regulatory process (shedding) built in that keeps hairs from getting too long on most of the body, where it's advantageous for some reason...

Answer 3

Actually, that's not true.

My father (74) decided 5 years ago not to cut his hair anymore and both his beard and his hair reach a certain length before the hairs just fall out and new ones grow in their place, but they never get longer than a certain length - I guess if he groomed and cared for them, they would grow longer, but both head hairs and other hairs have a maximum length they grow until they just fall out.

Toodles

Answer 4

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Answer 5

no other parts of body hair does not reaches a limit n stop... but it grows more slowly when compare to hair.....

Answer 6

Body hair doesn't "stop" it reaches its genetically predetermined length and then falls out and another grows in to replace it.

The same happens for scalp hair -- not everyone can have hair to their ankles. It's genetic.

Answer 7

All hair grows, stops growing, dies and then falls out.

Your DNA predetermines your hairs 'active growing time' & your 'dead but lingering on time' and your brush/comb will have a say in 'falling out time'.

Answer 8

I dont actually think it reaches its limit, it just grown alot slower than other places

Answer 9

its coded in your genetic dna, if there was a defect in your code, then your hair would keep growing

Answer 10

DNA