71 kcal / 10 g Butter naturally contains a type of fat called conjugated linoleic acid (CLA), which research shows may help protect against cancer. Butter also contains Vitamins A, D and E, which are essential for healthy eyes (especially night vision), strong bones and healthy skin. Rapeseed oil is an excellent source of vitamin E — a strong antioxidant, which can support eye and skin health. Rapeseed oil is also a great source of an omega-3 fat known as alpha-linolenic acid, which provides numerous heart health benefits like lower blood pressure and a decreased likelihood of heart attack.