NOW s 100% natural E-400 is a powerful antioxidant, necessary for protecting cells from the effects of free radicals. Free radicals are harmful byproducts that result from metabolic processes in the body, and affect the structure of cells. Vitamin E prevents the breakdown of saturated fatty acids and their combination with vitamin A, which results in substances harmful to the body. Additionally, it has the ability to bind to oxygen molecules, preventing their conversion into toxic peroxides. The action of vitamin E causes blood vessels to dilate, allowing better blood flow to the heart. It prevents atherosclerosis as it enters the LDL cholesterol molecule, thus inhibiting the destructive oxidation that results from free radical attacks. Therefore, vitamin E is another advantage in the fight against coronary heart disease. Vitamin E also helps maintain the elasticity of sperm cell walls, which enhances their mobility and prevents them from sticking together. In addition, it makes muscles and nerves work with less oxygen, increasing their endurance and vigor