answer:No, cola drinks won’t make you thirsty, but cola does count as liquid just like water does. I don’t think you are planning on increasing your soft drink intake, but in case you were, don’t. It’s tons of sugar as you know (although you said diet coke) and other stuff in there that block absorption of minerals. I’m not being preachy about soda, I think in moderation it isn’t a horrible, thing, but it certainly isn’t something you want to drink a ton of. If you want to try giving it up that would be a good thing. Just remember the caffeine.