Safflower oil
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Safflower oil, derived from the common thistlelike plant, may best olive oil for health, given that it's slightly lower in bad fat, slightly higher in good fat, and can take more heat. It is a great source of omega-6 fatty acids, which can only be obtained from diet, and helps all kinds of bodily functions run smoothly.

Try it: Safflower oil has a very high smoking point and is another good oil for all-around use, from sauces and sautés to searing and frying.