Starting early to prevent atherosclerosis is 100% successful prevention, whereas treating existing disease is only partial prevention.

“you're right uh starting early pays off later and and when you start later what you're doing essentially is to try and modify the disease that's already present when you're starting early what you're actually doing is starting stopping disease from developing and if you can stop a lesion developing that's a 100 percent success trying to treat modify through one process a complex set of outcomes at this end much less likely to succeed so stopping disease is perfect prevention treating disease is partial prevention and it has to be partial can't be more”