I discovered that my CAC score was rising a couple of years after I had a root canal done. I was scheduled for hernia surgery in 2011, but the pre-op EKG seemed out of line, pulse of about 50 per minute. They sent me to a cardiologist. The stress test and ejection fraction were normal. I'm a runner, so the slow heartbeat could have been expected. At age 62 I was a candidate for a CAC scan, then EBT, which the cardiologist recommended. It came back at at 225. Two years later it was 550, and I was diagnosed with heart disease, and the search began for the cause. I read Dr. Levy in 2015. When I got the root canal removed and replaced with an implant, the CAC scan, which had been increasing by 100 points per year, improved considerably, only 20 points increase in the year following the extraction of the root canal tooth. I wrote to Dr. Levy and we corresponded for a while. I thought I had the solution, but the annual heart scans reverted to 100 point per year increase.
Next "breakthrough" was after I read Dr. Esselstyn about vegetarian diet. Nine months strict vegan were amazing: the CAC score actually dropped 100 points in 2018. Again, I thought I had it solved, but I had to take an antibiotic for a urinary tract infection, and the next scan went back up 100 points. The vegan diet and few other experiments have helped. The past two years, I've only seen CAC increases of 20-40 points.
Now the thyroid seems to be the problem. I don't feel like a hypothyroid case, so I'm going to look again at Anthony William's book this afternoon.