An often over-looked problem is ?Food Combining?
Fruit for example does not combine well at all with meat, dairy, eggs, and many of the grains, but by it?s self causes no problems for me.
For breakfast today I ate 2 big papayas which were so sugary that it tasted like cake frosting to me, and in a bit I?m going to drink a smoothie with probably 8 bananas or more. I personaly enjoy eating fruit for breakfast and lunch and then having a big vegetable salad with avocado for dinner. In other words, I eat sugary foods alone and mono style, and I have the less sugary and much more fatty foods later in the day and the time between dinner and breakfast is usualy at least 12 hours allowing for enough time for the dinnner I ate the night before to be digested before I eat fruit.
I?m not suggesting that you eat the way that I do, but I am simply suggesting that what else you are eating and when you are eating it can have a big effect on how well your body can handle sugar intake.