Myrtek (2007) also warns that the exis- tence of the concept itself can be dangerous because it provides patients an “external causal attribution” and relieves them of the responsibility for behavior change. The Type A concept also gives false benefit to physicians when they work with CHD patients who lack the usual risk factors (smoking, poor diet, lack of exercise). Blaming Type A behavior is easier than admitting that the causes of CHD sometimes are unknown.