The human body is a complex system, and an illness in any part of it will affect the health of every other part. While oral health conditions like tooth decay and gum disease have long been associated with other health problems like diabetes, heart disease, pneumonia, and sepsis, many people may not realize that one’s mental health and dental health can affect one another as well. Here’s what mental health conditions like depression and anxiety mean for your smile and a few ways you can help keep your mouth and your mind in good shape.