Do you really need 8 glasses of water a day?

Doctors, scientists and our loved ones all remind us of the need to drink eight glasses of water each day. But is there any truth behind the tale that it's good for us?

Apparently not, as experts have now warned refreshing yourself when you're not thirsty could actually kill you.  Drinking excess liquid activates a protective swallowing inhibition within the brain, a study found. But forcing yourself to drink more than what your body needs overrides the mechanism and puts people at risk of water intoxication, scientists claim.

Hyponatremia - where vital levels of sodium in the blood become abnormally low - occurs when too much of the liquid has been consumed. It can cause lethargy, nausea, convulsions and even lead to a coma and if left untreated, it can lead to death within just a matter of hours.

Lead researcher Dr Michael Farrell, from Monash University, Melbourne, said: 'If we just do what our body demands us to we'll probably get it right - just drink according to thirst rather than an elaborate schedule.
Source  - Daily Mail