Effect of rosuvastatin therapy on carotid plaque m...[Am Heart J. 2008] - PubMed Result Meta-analysis of the studies assessing temporal ch...[Am J Cardiol. 2007] - PubMed Result
In conclusion, statin therapy, particularly when achieving the target LDL level [ less than a 100 ] , appears to promote a significant regression of coronary plaque volume as measured by IVUS."
Yes, "statins" reduce heart artery narrowing caused by plaque, if it reduces your ldl to < 100.
Note that some of theses statins are now generic - simvastatin and are cheaper and as effective as the brand names.
Stay away from Zetia and Vytorin. Recent news is they don't do much beyond lighten your wallet.
Also stay away from grapefruit juice if you are on a "statin".
Other factors that may help:
If you smoke tobacco - quit. I'm not sure about the cannabis
If you have high blood pressure control it. Less than 130/85 on average.
If you are diabetic - control your blood sugars. < 110 fasting / pre meal, a1c as close to 6% as possible.
"exercise"
Daily exercise dramatically lowers men's death rates
“Our findings show that the risk of death is cut in half with an exercise capacity that can easily be achieved by a brisk walk of about 30 minutes per session 5-6 days per week"
If you already have heart or vascular disease and are not allergic - aspirin.
Aspirin in Heart Attack and Stroke Prevention 
Linear Mode
