FILE - In this Thursday Jan. 17, 2013 file photo, a fishmonger prepares fish for a client in a market in Barcelona, Spain. Mediterranean diets have long been touted as heart-healthy, bu

 

              FILE - In this Thursday Jan. 17, 2013 file photo, a fishmonger prepares fish for a client in a market in Barcelona, Spain. Mediterranean diets have long been touted as heart-healthy, bu
FILE - In this Thursday Jan. 17, 2013 file photo, a fishmonger prepares fish for a client in a market in Barcelona, Spain. Mediterranean diets have long been touted as heart-healthy, but that's based on observational studies. Now, one of the longest and most scientific tests suggests this style of eating can cut the chance of suffering heart-related problems, especially strokes, in older people at high risk of them. Results were published online Monday, Feb. 25, 2013 by the New England Journal of Medicine. (AP Photo/Emilio Morenatti)