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Your armpit is a warm, moist environment where bacteria that release odors can grow if your personal hygiene is not good enough, or if you have a condition that causes more sweating that is common.

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8y ago
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13y ago

It's a secondary sexual characteristic, and a vestige of a time before clothes. That skin is very tender, as it gets less exposure to light and air. It is not desirable nowadays, but in pre-historic times, people could identify others by scent, and pheromones played a big part in sexual attraction for prospective mates.

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14y ago

Because there is no reason not to have hair there.

If you believe in evolution, you have the hair there because there is no reason not to have it there. (hairy arm pits are not a negative survival trait.)

If you do no believe in evolution, it's because God put the hair there.

In either case, the real reply is "Because you do."

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12y ago

It could be the deodorant, lack of deodorant, the growing follicles, or the stubble. If it's the deodorant, you may want to switch brands, or, if lack of use, start using some. Otherwise the latter two are natural, and just need too go through their courses.

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14y ago

to absorb sweating and body smell to keep you warm

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13y ago

i have ichy armpits because i have lice under them

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13y ago

The armpit is a heat sink. The hair is to help with the control of heat, specifically to hold moisture (sweat) in the area until it can evaporate, and take the heat with it.

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11y ago

Those bumps are hair follicles that help to promote cooling via sweating.

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13y ago

That's what happens as u grow older

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Q: How come you have itchy armpits?
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