According to recent studies the tale of drinking 8 glasses of water a day might not be true after all. While yes drinking water is good for you, recent studies have shown one major factor that we are forcing ourselves to a schedule of drinking water rather than drinking when we are thirsty. Our brains have a mechanism that forces us to stop drinking water after an excess amount of water is drank to maintain the nice calibration of volumes of water in our body. Also shown is the factor that too much water intake can lead to a fatal water intoxication or literally drinking so much water you drown yourself from the inside which is not a nice way to go. At the normal rate you can drink about 4 cups or 1/4 of a gallon per hour for you body to process the water and filter it throughout your body. So if your body can only process 4 cups, which is half of the 8 that is “required” then something is not clearly adding up. There have actually been quite a few studies done on the idea of this mainly I will be talking about the Monsah University study of water intake. and ways it has implied water intake is dependent on the biological make-up of the person.
Monsah would take the route of using past experiments by asking the group under two condidtions how much effort would it take to drink water and these two conditions were after they had rigorous exercise then next time they were simply persuaded to drink as much water as they could in one sitting. After comparing both the results the researchers at Monsah concluded that there was a three fold increase in effort after over-drinking, which would imply that if you indeed drink too much water your body is going to try and get ways of releasing that excess water, whether it is through urination, sweating, or any other form of excretement. Monsah would also use the fMRI machine to measure brain activity when the participants would try and swallow water with much effort, the fMRI found that the prefrontal cortex, mainly the right side, was very active when drinking in excess showing that the biological mechanism to stop over intake of water is found somewhere in the right prefrontal cortex. This according to the scientist, proves there is some sort of drinking inhibition when you reach the point in where your body has a nice balance of water, which implies also that different people need different amounts of water to reach this point. Whether it is 8 glasses or 4 glasses or even more than 8 considering your job, such as athletes, construction workers, etc. Age is also a major factor to take into affect, mainly elderly people are not intaking enough water and therefore are needing more and more water as opposed to younger generations who seem to be drinking more and more water thus need to stem back on the water intake.
Finally the last point is a health issue in which drinking too much water might seem like its impossible to drinking too much water but as I explained earlier drinking too much is harmful to your body, if too much water is drank there is a danger of water intoxication, aka hyponatremia, which occurs when the sodium levels are dangerously low from too much water absorbing the salt causing lethargy all the way to convulsions or even more dangerous comas.
For more reading I would recommend also reading the research published by Monsah University here.
Let me know what you think!