Diet high in good oil may help heart

A study of Alaska's Yup'ik Eskimos, who consume 20 times more omega-3 fats from fish than most Americans, suggests these oils can prevent obesity-related illness such as diabetes and heart disease, researchers say.
The researchers analysed data from 330 people living in the Yukon Kuskokwim Delta region of southwest Alaska.
Although 70 per cent of the population was overweight or obese, they did not show the same risk factors for heart disease and had a lower prevalence of diabetes than the overall US population.
The fats the researchers were interested in measuring were those found in salmon, sardines and other fatty fish.
In participants with low blood levels of these fats, obesity strongly increased heart disease risk.