I have some personal good news on having a high CAC score. Mine went from 378 to 798 in 4 years -- around 23-25% increase per year. We used the book by Dr. Caldwell Esselstyn on how to Prevent and Reverse Heart Disease and his diet as a baseline. We added some salmon and shrimp to make it more tolerable. Yesterday I did another CT Scan for a new CAC Score after 15 months and it came back 807.7. YEA! This is just over a 1% increase. Some studies indicate that an increase of less than 15% is an indication of significantly reduced risks. I have a very high Lipoprotein a level also (283) so using the diet to stabilize my calcium buildup rate clearly makes me feel the diet was worth the effort. Good Luck. There is a ton of information on these topics on the web and several really informative clinical studies as well.