[The risk of medical comorbidity in mental disorders with a particular focus on depressive syndromes].

: It has long been recognized that certain mental disorders, and in particular depressive syndromes, are associated with increased medical comorbidity. However, reliable data on the prevalence of comorbid medical diagnoses as well as the impact of these comorbidities on mortality are often rare and sometimes conflicting. : A systematic literature review was conducted using PubMed and Google Scholar to provide a critical account of the current state of research on the comorbidities of medical and mental disorders, with a particular focus on depressive syndromes. : Among patients with mental disorders, all-cause mortality is about doubled as compared to the general population causing a significantly shortened life expectancy in the range of one to two decades. This excess mortality is primarily due to increased physical morbidity and mortality, and it cannot be excluded that, for patients with severe mental disorders, excess mortality has been increased over time. Depressive syndromes are often linked to a broad range of somatic symptoms and can be found in diseases, such as heart disease, stroke, diabetes mellitus, overweight/obesity, and asthma. : Current studies provide ample evidence of close interactions between physical and mental health. Further developments in the field of psychosomatic medicine should take into consideration the health-related consequences of these interactions.