In case you were interested, 'Omega-3' refers to the double bond at the end of the fatty acid tail. Since the carboxylic acid end is the alpha end, the other end is omega.Apparently, they stabilise the membranes of the heart cells, reducing the risk of heart attack. This is undoubtedly controversial to some, as dietary topics generally are, but inuits seem to be OK with a diet rich in these fats.