Reversing Coronary Heart Disease...it is possible! This research has been published since 1998. Dr. Ornish showed, using imaging studies, that clogged arteries can become less clogged with specific lifestyle changes. Message me if you are interested is learning more.
When I began my own journey recovering from a heart attack people would caution me saying that a wholefood, plant-based diet was "radical".
Which is more radical: open heart surgery or lifestyle intervention? Even if someone make a "radical" lifestyle change to recover their health, it is probably less radical then having your chest cut open, ribs split apart, and a vein removed from your leg and grafted into to replace a clogged part of an artery.
Here is a link to the published research: https://pubmed.ncbi.nlm.nih.gov/9863851/