Diet. Certain types of foods can cause fluid retention which can lead to swollen legs and feet. Foods high in salt, MSG, and sodium are well-known culprits and are found in a variety of processed foods, soda (including diet soda), and fast food.

Does soda make you swell?

If you find that you're increasingly bloated after drinking diet soda, it may be because some artificial sweeteners can also cause excess gas. An overabundance of high-fructose corn syrup — which is found in many “regular” sodas — may also lead to gas and bloating.

Does Coke cause swelling?

For one, cocaine causes the vasoconstriction — or narrowing — of blood vessels, resulting in a buildup of lymphatic fluid that can cause swelling and bloating.