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The answer is it's all down to genes and when you're developing as an embryo your body develops as a series of segments. Written into those segments is a genetic pattern that tells that bit of the body where it is in the body and anything that develops on that segment inherits that genetic pattern which dictates to it how it should grow and develop. If you look at how hairs work - hairs have three phases to their life cycle. They have what's called an anagen phase and this is where they grow. The hair follicle has a number of stem cells that are very, very active and they pump out keratin which is the hair chemical. Keratin forms a big polymer which is a filament for hair which you see. After the anagen phase, which can last anything from days - in the case of an eyelash that's about 2-3 weeks, to a head hair which can be three or four years. That determines how long the hair grows for its ultimate length. Then the hair goes into what's called a catagen phase. That's where the follicle switches off and the hair falls out. Then there's a third phase which is called a telogen phase when the follicle rests. It then resets the system and the whole thing starts again. So the hair length is down to how long the hair grows for, the anagen phase, and that is determined by your genes. Basically the genes that are programmed into the bit of the body that's got the hair in it. I dont know if you know this but it even grows after your dead!
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∙ 14y ago
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Why does your hair never stop growing?
Why does your hair never stop growing?
What two things never stop growing on a human?
your fingernails and skin
If you put spit on your hair will it stop growing?
No. What a silly idea. Your hair will never stop growing. It even grows after you die.
How often to fingernails grow?
They never stop growing they have even been known to keep growing for a time after death.
Do your fingernails stop growing?
Basically, when you're dead.
What are three body parts that never stop growing?
your skin, your hair, and your nails.
When does the growth plate stop growing in the foot?
Your feet never stop growing, they carry on even after your dead. So does your hair, nose and ears.
How long do fingernails grow?
They technically don't ever stop growing.
Is it true that your fingernails and hair stop growing after you die?
Pretty much so. It may take a few minutes before death is complete throughout the body, but that's about it.
What makes hair stop growing?
Malnutrition is often what makes hair stop growing. Hair growth also decreases as a person ages and some hereditary disorders will cause hair to stop growing.
When does the human's hair stop growing?
All the hair nevers stop growing. It sheds and grows back.
What parts of body still grow when dead?
Sadly, the previous answer was incorrect. Scientists say that the hair and nail of a dead person grow about an inch then stop.
