Mouth breathers may have poor appetite, lower strength for chewing and swallowing difficulties. Thus they may prefer softer foods and the use of liquid to assist feeding. The feeding of mouth breathers may also be impaired because of decreased olfaction (smell) and taste (taste). As a result of changes in chewing, smell, and taste, the individual may have decreased appetite, gastric changes, constant thirst, gagging, pallor, anorexia, and weight loss with less physical improving or, conversely, obesity.