Vitamin E is one of the most important antioxidants that protect cells from free radical damage and oxidative stress. It also helps to slow down the ageing of cells, strengthens the walls of blood vessels, has a positive effect on the stability of red blood cells and reduces the risk of blood clots. Vitamin E also reduces fatigue, while increasing performance and supporting the body's defence system. Its deficiency can cause neurological problems and reduce the body's defence. The best natural sources of vitamin E are meat and eggs, fish and seafood, hazelnuts, almonds and peanuts, spinach, broccoli, avocado, kiwi and soy. However, if you are not certain about getting enough vitamin E in your diet, reach for nutritional supplements to help you replenish these nutrients.