"Rounder" participants were 163 percent more likely to develop heart disease in a Chinese study of adults over the age of 45.

Metal exposure from environmental pollution is associated with increased calcium buildup in the coronary arteries at a level comparable to traditional risk factors, according to a new study. The findings support that metals in the body are associated with the progression of plaque buildup in the arteries and potentially provide a new strategy for managing and preventing atherosclerosis.