The majority.
See https://en.wikipedia.org/wiki/Dihydrogen_monoxide_parody
Jokes aside, soda is typically loaded with sugar, but diet sodas don't seem as bad.
See https://en.wikipedia.org/wiki/Dihydrogen_monoxide_parody
Jokes aside, soda is typically loaded with sugar, but diet sodas don't seem as bad.
Aspartame is one of the most ridiculously well-studied food additives known to humankind.