You can become dehydrated if you do not drink water, which can cause a chain of life-threatening events. Even mild dehydration can drain the body's energy and make you feel tired, so proper hydration is important.
The Body Needs Water
The human body is approximately 70 percent water. Every one of the body systems relies on water. Water performs functions such as carrying nutrients to cells, flushing toxins out of cells and vital organs and maintaining moist environments for mucous membranes such as nose and throat tissue. Without sufficient water, bodily functions begin to slow and stop.
Recommended amount of water
Each human body requires a different amount of water to survive. The Mayo Clinic sticks to the "eight by eight" rule: drink eight 8 oz. glasses of water per day to prevent dehydration.
Dehydration
Dehydration is a condition in which the body loses more water than it takes in. This can happen because of vomiting, diarrhea, fever or fluid lost through sweat and breath. Fluid may not be taken in because of conditions such as nausea, sore throat, or other illnesses.
Symptoms of Dehydration
Dehydration symptoms vary based upon the severity of dehydration. According to the National Institutes of Health, they range from dry and sticky mouth, lack of tear production in the eyes, low or concentrated urine output (very dark yellow), muscle weakness, headache, extreme thirst, lack of sweating, rapid heartbeat, lowered blood pressure and confusion or unconsciousness (in extreme cases).
Consequences of Dehydration
The National Institute of Health states that "when dehydration is recognized and treated promptly, the outcome is generally good." When not treated, severe dehydration can lead to seizures, permanent brain or neurological damage, impairment and/or death.
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