 It affects the muscles and joints that connect your lower jaw to the skull. And there's a study done by German researchers that included more than about 4,000 patients who underwent medical and oral health examinations. They were looking at TMJ. And they found that the TMJ itself, because of the pain and also how it was linked with the nerves connected into the brain, that it was causing a lot of depression and anxiety. Now, the anxiety, I can understand. The depression was kind of different.