Vitamin E is a type of fat-soluble vitamin that can be stored in the body for future use. It can be found in various foods like avocados, nuts, seeds, vegetable oils, and certain green vegetables. The primary role of vitamin E is to act as an antioxidant, which means it helps protect the cells from damage caused by environmental factors. These factors can range from pollutants and smoking to an unhealthy diet, excessive alcohol consumption, or even excessive exposure to UV radiation.