Olive oil is very healthy oil. A correct and balanced nutrition necessarily contains olive oil on a daily basis. The essence and taste, which gives to all foods, is unique. Just like all oils, olive oil as well, must be used in moderation. The oils contain fatty acids, which can be separated in three kinds: saturated, monounsaturated and polyunsaturated. The animal fats contain mostly saturated fat acids, the seed oils polyunsaturated, while the olive oil contains mostly monounsaturated fat acids up to 83%. The oleic acid, the main component of olive oil, comprises such a monounsaturated fat acid.