Hey bro check out Dr. William Davis' work.
Basically, according to Davis, one ought to cut out all forms of wheat (as the wheat plant has been altered from its more natural form into a pernicious gut busting form).
No grains, rice, bread, potatoes. Cut those carbs out.
Eat your meat (red meat is totally fine), nuts, seeds, olives, raw vegetables, and avocados.
Limit your fruit to 1 or 2 servings...(don't want to consume too much sugar)
Avoid the carbs. And soda is a no-no.