Is it possible not to have any plaque in your coronary arteries at age 27? 0? cleveland clinic says it's starts in your teens? explain please?

Not significant: Till one reaches their 40 - 50's. Gives one plenty of time to eat a healthy diet and take statins if that's not enough

Coronary plaque: Plaque can start at young ages. It is usually not obstructive until middle age however, but that isn't an absolute rule. It is prudent to have a good diet and exercise program starting in childhood to help minimize your chances of obstructive plaque. For some people medications are needed to control their lipids and vascular inflammation caused by atherosclerotic processes.