“…Vitamin E, particularly α-tocopherol, can easily be obtained and consumed by most of the world's population. Vitamin E isoforms are naturally present in various foods, mainly of vegetable origin, such as cereals, legumes, seeds, and seed oil [6], as well as in some foods of animal origin such as milk [7], dairy products [8], animal fats such as butter [9], egg yolk [10], and some fish products [11]. These types of foods are present in some diets, such as the ketogenic diet, which is rich in fats and proteins but low in carbohydrates and causes an effect similar to fasting by directing the body into a state of ketosis [12].…”