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Laurie Figg of Homosassa, FL asks:
Which are the healthy fats and how much of them should we be eating every day?
Dr. Walter Willett responds:
The healthy fats are those that primarily contain unsaturated fats from vegetable oils and that have not been hydrogenated. These include most of the liquid vegetable oils like corn oil, soybean oil, canola oil, and olive oil. Nuts contain primarily healthy fats and can be a part of meals. Fish also contain fat that is high in polyunsaturated fats and can also be considered healthy. For those interested in their long-term health, a goal should be to replace unhealthy fats, in other words most animal fats and partially hydrogenated vegetable fats, with natural liquid vegetable oils. These can be used for frying, baking, and at the table. Commercial deep-fried fast food and most commercial baked products are very high in hydrogenated vegetable oils and should be avoided, even if they claim to be vegetable oils, unless they specifically say "no trans fatty acids."
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