The notion that emotional states can influence health is an enduring idea. In 1628, William Harvey noted that a mental disturbance can affect the heart and impair its function. However, it is only in the past several decades that rigorous and methodologically sound epidemiologic research has begun to provide compelling evidence of the link between emotions and cardiovascular diseases, with relative risk estimates that are comparable to those for known risk factors such as smoking. As a result, negative psychological states are beginning to be recognized as risk factors for the development of cardiovascular disease, believed to adversely affect cardiovascular health through multiple pathways.
This article reviews the epidemiologic evidence supporting the role of negative emotion in the development of one form of cardiovascular disease—coronary heart disease (CHD)—and briefly discusses the mechanisms that may help us to understand this relationship. It is worth noting, however, that there is evidence of similar relationships between negative emotions and other cardiovascular outcomes (eg, stroke), as well as between the related experience of chronic stress (eg, caregiver burden, work stress, marital stress) and a range of cardiovascular diseases.