I spoke to a nurse about this one time and told her how I was drinking 1 to 2 litres of pepsi max a day. She told me that it can make your bones leak and also reminded me how it rots your teeth! Plus, if you are trying to keep the weight off, the sweetner in diet coke (and other diet drinks or those that contain sweetner) makes you releases,insulin and when it doesn't receive the actual sugar, it makes you feel hungry and munch more!

Anyway, all that was enough for me so only treat myself to 2 litres at the weekend!