Why Is Water Important

The human body consists of 60% to 70% water. The brain is 90% water, blood plasma is 95% and even bones are 25% water. Water is continuously lost from the body as moisture in the breath we exhale, and when perspiration evaporates from the skin; so the water in our bodies is continuously being changed.

Approximately 5 pints of water enter the stomach each day in the form of drinks and food. Of this, about 4.5 pints pass into the blood stream through the small intestine. 1 pint is lost as water vapour in exhaled breath, 1.3 pints via sweat glands as perspiration and 0.2 pints are excreted. The kidneys remove the remaining 2 pints, as they purify the blood and excrete as urine.

So 80% of the water we ingest is distributed throughout the body via the blood stream. It is continuously replaced and used as a flushing agent by the kidneys.