Extra Virgin Olive Oil is almost unique among oils in that it can be used in the crude form without refining. This has an effect of conserving all its vitamins, essential fatty acids, and other nutrients. Because it contains all these nutrients, including antioxidants, extra virgin olive oil is beneficial to health and protects from damage by free radical oxidation. Cell membranes contain fatty acids that are highly susceptible to free radical damage. This damage produces lipid peroxides that can kill the cell. Extra Virgin Olive Oil contains polyphenols, vitamin E, and other natural antioxidants that prevent this damage.