Fishing out some answers
Fish and omega-3 fats are good for you — that much we know. But it gets complicated after that.
If you're looking to improve your diet, getting hooked on fish is one of the best ways to start. The American Diabetes Association, the American Heart Association, and the federal government's dietary guidelines all recommend that we eat fish twice a week. Our hearts perhaps stand to benefit the most: by combining the results of several studies, Harvard researchers calculated that, on average, a diet with a serving or two of fish per week reduces the chances of dying from heart disease by a third. As an added bonus, there's the distinct possibility that such a diet makes stroke, depression, and Alzheimer's disease less likely.
What is it about fish? It's a good source of protein. Some varieties slip some much-needed vitamin D into our diets. It can be a source of the mineral selenium.