The quote from Peter of HyperLipid is very interesting. Particularly the part about IGF increasing risk of cancer.

But because I have an inquiring mind, I have to ask myself...if carbs = insulin = IGF = increased cell division = cancer....then why the heck do 7th Day Adventists on their HIGH carb diets have such LOW cancer rates?

No matter how "logical" an argument may sound, I simply cannot ignore common-sense observations like that.