Everything is loaded with sugar, loaded with salt, and loaded with a bunchof ingredients that should never go into your body ever, ever, ever (I'm lookin» at you, corn syrup!).
Foods that contain gluten, dairy, loadsofsugar, hydrogenated oils, refined and processed ingredients, and (in some very sensitive people) nightshades appear to be pro-inflammatory, but there are a whole bunch that have the opposite effect.