The body is a very complex system. As doctors, we're often faced with the unknown. And we have to do a bit of guesswork to figure out what's going on.

Do you know anyone who battles with headaches? You probably do. Because as much as 15% of the general population gets headaches on a fairly regular basis.

One commonly used indicator for an increased risk of atherosclerosis and eventual cardiovascular disease is coronary artery calcification. Statistically, the higher your coronary calcification scores, the more likely you are to have a heart attack.