You see, according to Cousens' program, my husband can eat green vegetables; sea vegetables; non-sweet fruits: tomato, cucumber, avocado, red bell pepper, lemon and lime; most oils, seeds and nuts; a few cultured foods; apple cider vinegar; sprouted lentils and mung beans; all herbs and spices; and caffeine-free herbal tea (not that he would drink tea, caffeine or no).
He cannot eat meat, dairy, eggs, grains, soy, corn, mushrooms, sugar, alcohol, coffee, caffeine, most fruits or sweet vegetables such as carrots, beets, hard squash, yams, potatoes, parsnips, and so on.
Over time (read: months and years) certain foods, including grains, are added back in. But I've been too busy preparing enough raw food each day to read that far ahead in Cousens' book "There is a Cure for Diabetes" which explains the program in detail.