The idea of preventive health care is not new.  Indeed, the history of the Greenbrier Clinic proves that high quality preventive health care for executives translates into sound business policy for the corporations that employ them. What is new, however, is the accuracy and efficiency of the type of diagnostic health care offered by the Greenbrier Clinic.  The science of diagnostic testing for early detection of disease has been profoundly changed by technological advances.  Earlier detection leads to a significant improvement in the rate of cure.  Preventive health care makes better sense than ever before.

Although some patients come to the Greenbrier Clinic with symptoms of illness, a great many come to the Clinic without any symptoms at all.  Remarkably, even for those seemingly healthy individuals, there is a relatively high yield of diagnosis. Coronary disease is frequently diagnosed at an early or asymptomatic stage.  Eight percent of Clinic patients are found to have polyps or growths in the rectum or colon when examined by flexible sigmoidoscopy; thirteen percent have similar findings when a barium study of the colon is performed.  Five percent of patients are found to have diabetes.  The incidence of breast cancer detected by mammography is nearly one percent.