Balding is no longer just a cosmetic concern. Researchers at the University of Tokyo in Japan have linked thinning hair to heart problems. Researchers examined research of 37,000 people and discovered a relation between heart disease and thinning hair. However, people who just had a receding hairline did not have the same elevated risk. Balding men are 32 percent more likely to have coronary heart disease. Scientists are not quite sure of the correlation between hair loss and heart disease, but some theorize that increased sensitivity to male hormones, insulin resistance and inflammation in blood vessels play a role.