55% greater risk if you have this marking:
"The presence of a diagonal earlobe crease has been recognized as a sign of cardiovascular disease since 1973. Over 30 subsequent studies have been reported in the medical literature, with the largest involving 1,000 unselected patients. The earlobe is richly supplied with blood, and a decrease in flow over an extended period of time is believed to result in collapse of the vascular bed, leading to a diagonal crease.
It appears that individuals with an earlobe crease have a 55% greater risk of dying from heart disease than those without the marking, with the risk becoming even more significant if diagonal creases appear on both earlobes. However, this predictive value does not apply to
Orientals, Native Americans, or persons born with certain hereditary disorders."
http://www.diagnose-me.com/cond/C70120.html#H3 
