What is worse for acne, starch or sugar? I can't seem to tell if eating cereal (like lucky charms) worsens my acne... or something like a sweet potato or even oatmeal (rolled oats).

Rolled oats are starchier than cereals (cereals are half sugar half starch)... while oatmeal is all starch

 

For me its starch, most people would say sugar i guess.