Hall said he'd like to see them follow these men for a long time to see what these genetic changes eventually mean.
Ornish said this study's findings were "very unexpected, and we've raised more questions than we've answered."
In any case, Hall added, it's clear that if you can make lifestyle changes like those in the study, you can definitely improve your cardiovascular health.
More information
To learn more about how food and exercise can affect your cancer risk, visit the American Cancer Society.
