Your whole dietary tract, from mouth to anus, is OUTSIDE of your body. although you might think of it as being "internal." It's not, and your bloodstream and immune system always treats food as a foreign invader. (Incidentally, this is why internal bleeding is such a serious problem for soldiers wounded in wartime.) There is only one disease, viz., sludge in your blood. And the cure is always the same, to alkalize your bloodstream and stop producing acid in your stomach. Fruits are the only natural food of mankind, along with fresh air and sunshine. True in the Garden of Eden, and still true today. All meat is acid-forming. The reason you felt sluggish on a vegetarian diet is because most vegetables don't contain seeds, the vital part of any plant. But all fruits do, as long as they are not "genetically altered" by the Dr. Moreau mad scientists at Monsanto, Archer Daniels Midland, etc. If God made it, you can eat it. If sinful man ever tries to play God, don't touch his resulting Frankenfood with a bargepole.