In this video, Mark Yoder (N.P., Oncology) provides an introduction to “dry mouth,” as well as some tips for dealing with this common treatment side effect. It has been scientifically proven that the mouth cells are one of the first to be damaged by cancer treatments, causing dry mouth, which causes a dry or metallic taste that permeates through the mouth and throat, affecting taste and smell. Dry mouth occurs when any of the six major or several minor salivary glands do not work properly. While saliva is produced all of the time, most of it is produced in the late afternoon, so dry mouth can make it difficult to sleep at night.