But our diet consists of many different types of fatty acids that do contain double bonds. So the next logical question is how exactly can the cells of our body actually break down fatty acid acids that do contain one or more double bonds? So this will be the focus of this lecture. Now, fatty acids with double bonds can be broken down into one of two categories. They can either contain an odd number of double bonds, so 13579 and so forth, or they can contain an even number of double bonds, so 2468 and so forth. So in this lecture, we're going to look at two different cases.