One and a half years ago, in February 2009, I got a heart scan. It’s an X-ray measurement of how calcified your arteries are. Persons with high scores are much more likely to have a heart attack than persons with low scores. Scores in the hundreds are dangerous. Tim Russert, who died at age 58 of a heart attack, had a score of about 200 ten years before his death. Above age 40, the scores typically increase about 25% per year. That puts Russert’s score when he died at around 2000.
A few weeks ago I got another scan, at the same place with the same machine. Here are my scores. February 2009: 38 (about 50th percentile for my age). August 2010: 29 (between 25th & 50th percentile). In other words: 47% lower than expected. The earlier scan detected 3 “lesions”; the recent scan detected 2. The woman who runs the scanning center — HeartScan, in Walnut Creek, California — told me that decreases in this score are very rare. About 1 in 100, she said.
The only big lifestyle change I made between the two scans is to eat much more animal fat. After I found that pork fat improved my sleep, I started to eat a large serving of pork belly (with 80-100 g of fat) almost every day. Later I switched to 60 g of butter every day. The usual view, of course, is that to eat so much animal fat is v v bad and will “clog” my arteries. In fact, the reverse happened. Judging from this, the change was v v good.