I haven't read the information on the side of a diet coke can for a long time but I think it is either 0 calories maybe 1 calorie and it has no fat, so no diet coke itself won't make you fat. Of course that doesn't mean that it's good for you either.

The thing that I have noticed about a number of people that drink diet soft drinks is, that they think, that since they are drinking a diet drink, that they can then splurge on other things that are quite fattening and some how, it won't bother them. Then they gain weight.

I used to have a friend in school that had a diet coke and a candy bar or two for lunch everyday and then kept wondering why she was gaining weight.

It has 0 calories so I would say, no it does not. Don't take my word for it but I don't think it does... and hell, f if it doesn't if you're cutting back on the regular coke good for you.. drink up. :)

No, Carbs and Calories make you gain weight.No suger in diet so no carbs it pretty much carbonated water but aspartame ain't the greatest for you.

it can if you drink too much of it.

Check this video

naw

No but it will slowly poison you...
http://en.wikipedia.org/wiki/Aspartame_controversy

sitting on ones ass doing nothing will make a person gain weight

no .
but its unhealthy , full of chemicals and can case damage to your organs in the long term .

It rots your teeth and is very unhealthy..