Is Grease really the "Word"?

I am fully aware that Grease is long gone and other cast members who have Senior Project talk about it entirely too much, but I have one last point to make before hanging up that Pink Ladie's jacket. During Act 1 Scene 7, Roger (Kyle Thompson) and Jan (Briana Woodruff) talk about Coca-Cola, and the effects extended use may have. Granted it was a musical, but it made me think about how products were made a few decades ago before anyone knew the "dangers" they possessed. One question that came to mind was: Have soda companies changed the amount of sugar in their drinks after learning the affects sugar has on enamel? Perhaps companies like that are only there to make a quick buck, but maybe they have "toned it down" a bit. Even making a diet substitute to everything is a step in the right direction.