The argument made in the article seems inarguable, but I don't see how a coronary artery calcium score is going to prevent a heart attack. You gotta do statins, exercise, and eat right basically no matter what. FWIW I had a coronary artery calcium score ordered by my doctor at my last checkup. It was $120.
The score will tell you that you do need to worry about lifestyle.
Whether or not people actually follow through is another story. There weren't any cigarette smokers who didn't know how bad it was for them...
I assume they mean.. have the test and then act upon it with diet/exercise/medicine to prevent the heart attack If you never had the test, maybe you don't know you are at risk and don't make any changes and then you get the heart attack