Hi K8ty
I don't know if this will help but this is the way that I understand things after trying to combine two programs about food combining. (Suzanne Somers and Fit For Life)
Susanne Somers can really explain this well in her books. I find her to be an intelligent woman even though the "packaging" would suggest otherwise.
My simple version of her plan goes like this:
Carby (I may have just made up that word!) foods will cause an insulin spike. Insulin is a hormone that stores fat. If that particular carb meal contains no fat then there is no storage. Similarly when a fatty/protein meal is consumed without any carbs (ie pasta, bread, rice, potatoes) then, again the fat storage is not an issue because there is no big insulin spike.
The Fit for Life Plan speaks of "Natural Hygiene". The idea is that the stomach digests different foods differently. Some foods require an alkaline environment (fruits,starches) and some require acid (animal products). Veggies will digest in either environment. When you improperly combine these foods (ie a cheese sandwich, or pasta with meat sauce) the stomach releases juices for both acid and alkaline digestion and they impede one another, slowing the whole process and putrefying the food. Causes gas, build-up of sludge in the GI tract, poor absorption of nutrients in the food, poor functioning of virtually all systems of the body.
Fruits and veggies are considered "high water content" foods in FFL, and everything else is considered a "concentrated" food. The more concentrated foods that we ask our bodies to digest at a time, the more sluggish we feel (ie xmas dinner...race to the couch!) because of all of the energy that is required by our bodies to deal with this mess of slop.
Now I don't know if that is a very scientific explanation, but I will tell you this: In the last 15years I have never felt so good as when I was able to discipline myself to follow the FFL plan. There was energy that came out of nowhere, the weight was falling off, and those two things were nothing in comparison to a feeling that I can only describe as "clear". It was magical. I want it back. I am in the process of re-vamping eating plan right now to see if I can find it again!
I don't know anything about any other food combining plans and what their theories are. What plan do you follow? Perhaps there are many different schools of thought for separating the things that we eat?
Anyhow, I wish you luck!