On many of the cleansing forums, one of the first things that is advised to be removed from the diet is processed foods, white flour, white rice, White Sugar , sodas, etc. The relationship between a toxic body and processed foods is well established around here. Of course the exact causes can vary between different people depending on the life and lifestyle of the individual. Individual body types play a big part in the issue of diet's effect on skin, as well. Some people handle meats very well, others don't. The same with grains, and fruits.
Keep us posted as you further explore this correlation.