Like Detroit said, you need to consult your doctor, but for 99% of humans it is very uncommon to have issues from drinking too much water. My mom is an ER nurse and every now and again they get a teenager in with health issues related to drinking too much water. Why you might ask? Well it always turns out that the teen did some sort of thing they weren't supposed to do, like an illegal drug or alcohol, and they are trying to "flush" it from their system. Duh, how stupid is that? It takes more than water to wash pot out of your hair follicles. Most often the patients my mom sees with that problem drank like 4-5 gallons of water in a couple of hours. Typically I drink 96 oz/day and that's perfect for me, and I've never had a single issue related to drinking too much water (well other than spending a good bit of time in the ladies room).
I've always been told, by both my regular doctor and my knee doctor that you need 64 oz/day + 8 oz for every 10 pounds you want to lose. I can tell you this, when I drink my water I feel good, when I don't I am achy all over and my lips and fingers crack open.
Starting weight: 244.6 lbs. 10/01/09
Pounds lost: 80.6 lbs
Current weight: 164 lbs
Goal weight: 120 lbs
Weight to go: 44 lbs
Goal Date: 1/1/13
Last edited by almeeker; 12-04-2010 at 08:07 PM.