ANSC 420 Lecture Notes - Lecture 7: Purified Water, Glutathione, Water Intoxication

• School: McGill University
• Department: Animal Science
• Course: ANSC 420
• Professor: Vilceu Bordignon

Document Summary

For those who have healthy kidneys, it is somewhat difficult to drink too much water, but (especially in warm humid weather and while exercising) it is dangerous to drink too little. People can drink far more water than necessary while exercising, however, putting them at risk of water intoxication, which can be fatal. In particular large amounts of de-ionized water are dangerous. Normally, about 20 percent of water intake comes in food, while the rest comes from drinking water and assorted beverages (caffeinated included). Water is excreted from the body in multiple forms; including urine and feces, sweating, and by water vapor in the exhaled breath. These substances are generally more recent discoveries which have not yet been recognized as vitamins or as required. Phytochemicals may act as antioxidants, but not all phytochemicals are antioxidants. As cellular metabolism/energy production requires oxygen, potentially damaging (e. g. mutation causing) compounds known as free radicals can form.