I used to buy diet coke and diet pepsi by the case sometimes usually drinking eight to twelve soda cans in one day. I stopped because my kidneys started hurting and my head would just spin.I didn't eat right because I was never hungry as well it would give me a pop hangover in the morning. Thank god my parents were concerned and repeatedly kept me from drinking too much ofthe stuff. I have ceased buying it. I drink power-aid sports drink now to substitute the addiction. At my work place there is a soda fountain and I have switched to coco cola instead of diet pop. Usually drinking two to three 16oz glasses a day. Mostly though I drink water it's a good substitute.