Also salty food makes you thirsty, so as toble commented, you will drink more diet coke that will makes you more hungry.
I think a glass of iced tea (even with a little bit of cane sugar to remove bitterness) is better than a diet coke. I can't prove why, every people in good shape I know don't drink diet soda. Just try and see is my best advice !
Everything in too high quantities is bad anyway.
http://www.forbes.com/sites/daviddisalvo/2013/03/24/study-ea... It's not affecting your weight, but your overall health.
Also salty food makes you thirsty, so as toble commented, you will drink more diet coke that will makes you more hungry.
I think a glass of iced tea (even with a little bit of cane sugar to remove bitterness) is better than a diet coke. I can't prove why, every people in good shape I know don't drink diet soda. Just try and see is my best advice !