Over half of the fat in corn oil, or 7.4 grams per tablespoon, is polyunsaturated fat. Polyunsaturated fatty acids, more commonly known as PUFAs, are equally as important as monounsaturated fats for stabilizing cholesterol and safeguarding your heart. Some of the PUFAs in corn oil are omega-6 fatty acids, and a tiny fraction are omega-3s. Omega-3 and omega-6 fatty acids are essential in your diet, since your body cannot make them. You need them for brain cell communications, growth, reducing inflammation and further protecting your heart.