This latest study is from Johns Hopkins University.
Looking at eating patterns of overweight adults across the country, they found that whether they drank sugar-sweetened soda, or the diet version, they all got about the same number of calories per day.
However, the diet soda drinkers ate significantly more of their calories from FOOD.
Some experts believe the artificial sweeteners in diet soda may make some people crave more sweets.
The best way to cut calories from drinks is to drink plain water.
If that's boring, try adding fruit slices to add natural flavor.
