NEW YORK, Apr 4: Supporting recommendations that people eat a couple of servings of fish per week, a new study suggests adults with the highest levels of omega-3 fatty acids in their blood are less likely to die from a range of causes than those with the lowest levels. Out of about 2,700 older Americans, researchers found people with the most circulating omega-3s – usually found in oily fishes such as tuna or sardines – lived about two years longer than those with the lowest levels, on average. (agencies)