explained, these are reasons to have a chest x-ray, or ct scan. i can't recommend the ct scan for everybody who doesn't have a family history, has no symptoms, isn't a smoker. i can't recommend that. it's not economic, but if you have any of these vulnerabilities, a cough that can't be explained in any other way, a family history of lung cancer, a history of smoking, then you should have the ct scan. and, the ct scan is in my opinion much more effective for detecting early disease, in the lung, than a chest x-ray. >> jamie: good to know family history plays a role. i didn't know that. >> eric: you talked about family history in all of our health and how important that is. you are right. it is summer and you know what that means and you get outside and most of us know to put the sunscreen on before we go outdoors but there has not been