- dry mouth
- lack of concentration
- fatigue
- sleepiness
- headaches
Prolonged periods of mild dehydration cause:
- bad breath and dental caries due to decreased saliva(saliva normally rinses out the mouth completely)
- confusion and feelings of being unable to cope
- swelling (oedema) in feet, legs and hands
- the risk of kidney stones because the urine passing through the kidneys is more concentrated
- increased symptoms in gout sufferers
Severe dehydration can cause:
- overheating from decreased sweating and cooling by evaporation
- heart problems
- hallucinations
- coma
- death
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