"The results of the uniquely-constructed ERA JUMP Study were just released, a fascinating study of the relationship of omega-3 fatty acids to coronary and carotid plaque.
The study adds insight into why the Japanese experience only one third of the heart attacks of Americans, and why Japan occupies the bottom of the list for least heart attacks among all developed countries.
The Electron-Beam Tomography, Risk Factor Assessment Among Japanese and U.S. Men in the Post-World War II Birth Cohort Study (ERA JUMP), a collaborative U.S.-Japanese effort, compared three groups of men:
-- 281 Japanese men living in Japan
-- 306 non-Japanese men living in the U.S. (Pittsburgh, Pennsylvania)
-- 303 Japanese Americans (having both parents Japanese without "ethnic admixture") living in Hawaii.
The last group represents a group that is genetically similar to the group in Japan, but exposed to an American diet and lifestyle.
Three main measures were compared:
-- Blood levels of omega-3 fatty acids, EPA and DHA)
-- Carotid intimal-medial thickness (CIMT, the thickness of the carotid artery lining that can serve as an index of body-wide atherosclerosis)
-- Coronary calcium (heart scan) scores."