Unlike vitamin deficiencies which can take weeks to make someone ill, a water deficiency can kill in days or even hours.
Water is also very important for removing toxins from the human body. The body has four major ways of removing toxins which are:
Bowels
Urination
Perspiration
Processing of toxins by the liver
The first three of these four methods directly excrete water from the body. When dehydrated, the body will try to save water by minimizing the use of the first three functions and will force the liver to assume as much of the workload as possible. This extra work will place a heavy burden on the liver which still has other functions in addition to detoxification. Even then, the liver by itself will not be able to do all that work very efficiently and toxins will build up rapidly.
Water is also important to fitness and fat loss for several reasons including the following:
Water fills us up without adding any calories.
Dehydration will degrade a person’s ability to exercise and burn calories.
Dehydration will reduce protein synthesis which is needed to build or repair muscles.