I'm wanting to do the Mayo Clinic Diet for 7 days (the real Mayo Diet, not the fad one). What should I eat as my main source of protein? (I'm not vegan, but I don't eat eggs or fish.) The Mayo Diet calls for proteins and fats such as in fish (which I don't eat). Normally my proteins come from nuts, oils, certain veggies, and veggie-meat... but the proteins in vegetables won't count, because the vegetable only counts as the vegetable in the Mayo Diet.