24 healthy volunteers will be randomized and will start the study. The study will last 12 weeks for each subject. The first week will be a week of adaptation (or run-in period) to the diet which they will have to follow for the duration of study. During this period, they will collect 3 samples of stools and urine. Then subjects will alternate 4 days of diet either with ham, or with ham and pomegranate extract, or with ham enriched with vitamin E or sirloin steak, marinated sirloin steak or marinated cooked sirloin steak. At least, 3 days will separate every period (wash-out) of nutritional intervention. Urines and stools will be collected last 3 days of every interventional period and also last day of every wash out period.
