There is a significant amount of research that substantiates the connection between social support/relationships and the development, onset, and/or recovery of several physical diseases/illnesses. Research has shown, for example, that an unhappy marriage can increase the likelihood of becoming ill by 35% while stressful communication can lead to an increase in cardiovascular reactivity which in turn increases the risk of coronary heart disease and premature mortality. This volume provides a comprehensive overview of the influences of communication on physiology and physical health status occurring in a variety of contexts, from families, interpersonal relationships, and public speaking to sport fandom, affection, fear, and the escalation of conflict. It offers a broad and up-to-date review of the relevant literature in this area of study.