By Michael Kachitsa
Water is an essential nutrient and plays a key role in the human body. We can survive up to several weeks without food, but only a few days without water. Every system in the body, from cells and tissues, to vital organs requires water to function.
Water carries nutrients to all cells in our body and oxygen to our brain. Water allows the body to absorb and assimilate minerals, vitamins, amino acids, glucose and other substances. Water flushes out toxins and waste. Water helps to regulate body temperature. Water acts as a lubricant for joints and muscles.
Water makes up on average 60% of an adult’s body weight, from 31 % in bones to 83% in lungs. The human body cannot store water. Every day we are constantly losing water though breathing, sweating and through the release of urine and faeces. Ensuring that lost fluids are replenished in a timely manner and that our bodies are correctly hydrated is essential for good health and for the body to operate.
In 2010, the European Food Safety Authority (EFSA) released its Scientific Opinion on Dietary Reference Values for Water, which provides us with clear recommendations on the amount of water men and women should be drinking per day, depending on their age. This Opinion has also paved the way for the issuing of national guidelines for the daily intake of water.
Source – EFBW