A method of monitoring oral health including deriving a health profile of a user from information obtained from a sample taken from the user; displaying a representation of the health profile on a display, wherein the representation of the health profile includes a list of undesirable oral health characteristics that are detectable from the sample and a graphical depiction of an oral cavity divided into a plurality of regions; and wherein in response to selection of a first one of the undesirable oral health characteristics, the representation of the health profile indicates which regions of the user's oral cavity are affected by the first one of the undesirable oral health characteristic.