how long does it take for a human to dehydrate?

Answer 1

If you aren't hydrating, you are dehydrating. How long before the effects become noticable depends on the person and what else they are doing. Your body can get used to being dehydrated so some people live in a constant state of dehydration. In extreme cases it'll kill you in about 3 days.

Answer 2

Humans risk of dehydration is dependent on their weight although the absolute longest is no more than a week.

Answer 3

Depends on ambient temperature, and activity level. If your talking, walking throught the desert, 2.5 to 3 days max. You no doubt would have collaped and gone unconsious long before you die though. If you are in a moderate climate doing limited physical activity, then about 3-5 days. Sitting in air conditioned space doing absolutely nothing, 5-7days. But before you died you would suffer...alot. Servere migraine headaches first, followed by servere muscle and joint cramps, abdominal pain. Then the real shi*ty stuff starts to happen. Throat becomes very dry and raw, difficulty in swallowing, tongue swells up, leading to possible asphixiation, rapid weight loss, eyes sink back into your head, lips, scalp, and creased skin, cracks and bleeds, you are in constant pain throughout this entire process, eventually you will fall asleep and slip into coma, as your organs shut down one by one, then.....you die! Not pleasent.

Answer 4

A person can die of dehydration in less than 14 days, A Person can die of starvation in about 40....So Easy facts.

Answer 5

Temprature also has a part to play, and the sort of stress the body is under, (movement etc), salt tablets would help retain water within the body, but the body may experience stress with-in 3 days

Answer 6

that depends on the stamina, weight, etc... of the person but usually no more than 5-7 days

Answer 7

depends on how much fluid you have in your body already and the climate