Studies show that people who substitute sugary drinks with diet drinks don’t lose weight. The sweeteners added to diet soda are actually calorie free but these same studies also suggest that the sweeteners can stimulate a person’s appetite. Now that explains why you feel so hungry after drinking a Diet Coke.
You can, however, lose weight by drinking diet soda, but you have to change other things too. You can’t be eating pizza with hundreds of toppings and drinking diet soda and expect to lose weight. You have to change your lifestyle and your diet too.