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Life events and stress reactivity as predictors of cancer, coronary heart disease and anxiety disorders.

The topic relative to the differential psychobiological mechanisms between cancer and coronary illness has been showing for the last years. In this sense, some theoretical models which have been formulated by relevant authors have suggested the possibility of differentiating cancer and cardiovascular disease, both the onset and the progression, from coping strategies, personality variables and affective states, as well as the different categories of psychosocial stress. Likewise, the implication of psychological distress, such as anxiety, anger and depression for the occurrence of somatic disease has been reported frequently. This research was designed to analyze the psychosocial patterns which could explain the incidence of heart disease, cancer and anxiety based disorders. Measures of life events and stress reactivity were obtained from a total of 109 patients diagnosed as having breast cancer (37), infarct (37), and anxiety (35), and from 72 normal control subjects. Our data tend to show that the cancer group was strongly predicted by lost and illness events, while the coronary group was more associated with work events. The anxiety disorders group lacked a life events dimension, but shared the same category of the infarct group. We also found a strong relationship between depressive reactions and cancer in contrast to the anxiety-anger variable that was more relevant in the infarct patients. The interaction between internal and external stress factors in the etiology of disease is also discussed.