If you are health-conscious about using coffee filters, there are two things you should know. First, reusable filters allow more coffee oils into your cup, which are responsible for a lot of flavor but are also high in bad cholesterol. If you have cholesterol issues, then you need to be careful of how much coffee you drink and what filters you use. Second, paper filters get rid of oils but the bleached versions have been known to have dioxin (used for the bleaching process) inside them. There’s no special reason to get bleached filters though, and unbleached versions are available at most stores.