At first glance a few key statistics related to water intake and composition are important to note: the human body contains roughly 11 gallons of water broken down into these fractional parts: blood is 85% water, muscle is 80% water, brain is 75% water and bones are 25% water.

With the value and percentage of water making up nearly 66% of the human body it plays a tremendously important role in normal physiological function(s).  This is largely why dehydration, when present, can lead to a number of critical problems including: migraines, constipation and even kidney stones.¹ Lack of water in the body can also take a toll on the health of your BRAIN, affecting mood and overall cognitive and emotional function.  When dehydrated a person may be more prone to feelings of fatigue, anxiety and irritability.

Dehydration Shrinks Your Brain

About three-quarters of your brain is water and when the body is dehydrated your brain volume actually decreases.  It is this shrinking process to whi...