I tried this Denie so long, but I certainly believe that they contribute to acne in a big way. Yesterday my face was 99% clear and I was really confident. If the idiot I am I thought I could return to normal and some chocolate and a bottle of fizzy drink and bang this morning I have two medium-sized red spots and two other whiteheads. Really angry. So many times in the past I tried to Denie that chocolate in any way could contribute to acne, but Ive proven to myself. Im good to stay away from it