Plant oils include olive, canola, sunflower, peanut, and sesame oil. These oils are a great source of healthy fats. Healthy fats help your body build cells and store energy. They also help your body use vitamins. Plus, they help you feel full and satisfied after a meal. And studies have found that using plant oils rather than animal fats may also benefit your heart. So put down the butter and bacon grease and reach for a plant oil instead.