hmm that is odd, all i know is it is possible to be intolerant to meat, but ive only heard of the one case, so i guess all i can advise is you either see your doctor, or just recognise that meat (except rare steak) is doing this so cut out meat (veggie food is nice - i recommend Linda McCartney's sausages) then if the cramps continue try cutting out something else that's a likely cause