Extreme dehydration, defined by the World Health Organization as losing more than 10% of your body weight in liquids, can result in injury or death, needing a trip to the emergency room. Because your blood volume is too low, you may experience seizures, cardiac failure, or hypovolemic shock.
Bad breathe
Saliva has antibacterial properties, but dehydration can prevent your body from producing saliva. Saliva production slows down during sleep, leading to an unpleasant taste in the mouth. So the next time your mouth seems dry and your breath smells less-than-fresh, it may be time to rehydrate
Dark Urine
Not urinating at all? You’re most likely severely dehydrated. Normal urine should be pale yellow in color, like lemonade. If your urine is a darker color, similar to apple juice, this could be a sign of moderate to severe dehydration. Take a large water bottle with you to drink throughout the day.
Confusion, Unsteadiness
Drinking water and eating water-filled foods can help your brain work better. If you’re feeling like you might pass out at any moment, or you’re confused over where you are, how you got there or what you’re doing, it might mean you are severely dehydrated.
Craving for sweets
Cravings for sweets are more common when you’re feeling dehydrated or fatigued. Your body may be experiencing difficulty breaking down glycogen to release glucose into the bloodstream.
Dry Skin
A person’s skin elasticity is also telling. Pinch the skin on the top of your hand and see if it moves back slowly, this is an indication that you’re mildly to moderately dehydrated. If the skin seems to stick together (i.e., it “tents”), this is a sign of severe dehydration.
