Twenty years ago, heart disease was the number one killer of Canadians. That number has dropped over the years thanks in part to research examining the causes of heart attacks and recommendations for better preventative behaviours. Despite this drop, there is still much to be learned about how heart attacks happen. One of the most studied causes is the atherosclerotic lesion, better known as plaque. This accumulation of cells, fats, minerals, and other organic material tend to accumulate in the arteries as we age. If buildup happens to occur in the coronary artery, cardiac arrest may inevitably happen.