Scherwitz, L., Graham, L. E., &Ornish, D. (1985). Self-involvement and the risk factors for coronary heart disease. Advances, 2(2), 6-18.
Describes studies showing that excessive involvement in one's self increases one's risk of coronary heart disease (CHD). A preliminary study found a connection among self-involvement (SI), Type A (coronary prone) behavior, anger intensity, and high blood pressure. Later studies showed that self-involved patients were more likely to have recurrent heart attacks and poorer heart muscle contraction, could not exercise as long on a treadmill, and ...