Frequently Asked Questions about Does Diet Soda Make You Gain Weight 1. Is diet soda really calorie-free? While diet sodas are marketed as calorie-free or low in calories, they do contain artificial sweeteners that can provide a sweet taste without adding significant calories to your diet. It is important to note that some studies suggest these sweeteners may still have an impact on weight gain, but more research is needed. Find more information here. 2. Can diet soda cause weight gain? The evidence regarding diet soda and weight gain is mixed. Some studies suggest that consuming diet soda may be…