Is drinking too much coffee and water bad for your kidney?

Since I quit smoking, in order to fill up the "5 mins time gap" I develop a habit of drinking coffee and water when I am working on my desk. I can drink around 2 litres of water and 3 cups of coffee in around 4 hours time! One night, I drank a record level of 5 litres of water. A friend of mine told me that I can damage my kidney by drinking too much water and spoilt my heart by drinking too much coffee! Can someone verify this for me?

Answers:
Water is always good for you.it's hard to "overdo" it. You're lucky! I wish I could get down enough water every day, but I just don't care for it much. Only 3 cups of coffee in 4 hours time? You're doing good. Don't worry about it. Your co-worker is a hypochondriac. It's a hell of a lot better than smoking! Something tells me that co-worker is a smoker?? <<LOL>>

That is not true. Drinking water will help you to cleanse your liver, so alot is good, its like exercising a muscle, it will only grow and become healthier. Coffee speeds up your metabolism, so a little is good. if you are worried, switch over to decaf.

P.s. good for you for quitting!! Congrats and kutos.
water is suppose to be great for cleaning out a system and not bad. Coffee on the other hand is bad for the caffine can damage your system somehow if taken in to much.
Ask a nutritionist
Drinking to much coffee is bad for you.its bad for your liver and heart.But water is good for you and its good for everything in your body.drink water everyday
I think the caffeine in the coffee can make you hyper, but the water is OK. Too much coffee can also affect your blood pressure and that is not good.
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