Water, hot water and a heart attack.
Water is clearly the most important nutrient and the most abundant substance in the human body. Water comprises about three quarters of the human mass and is a major component in every cell. In addition water is important to human health for many reasons including but not limited to the following:
• Water is needed to separate (by a process called hydrolysis) a phosphate group from adenosine triphosphate (ATP) or guanosine triphosphate (GTP) to get energy as illustrated by the following equations.
ATP +H2O = Energy + ADP + Inorganic Phosphate
GTP +H2O = Energy + GDP + Inorganic Phosphate
All energy from food is used to generate ATP or GTP before its energy can be used by the human body, which makes water crucial to all energy usage by the human body.
Water is the containing medium for electrolytes and all other ions throughout the human body.
Some of these ions help to form electrical pathways for nerve functions.
Being 2% dehydrated can seriously degrade physical and mental functions.
Being 15% dehydrated is likely to be lethal