Addressing the root cause of these disparities conveys benefits beyond the health sector. Education, for example, not only promotes better health choices but also enhances job opportunities, improving earnings and access to health insurance. A more educated populace can make the workforce more competitive, strengthen the economy, lower crime rates, boost tax returns on higher earnings, and reduce welfare demands. A study that took these broader societal benefits into consideration estimated that reducing grade school class sizes would add QALYs to students' lives and generate net savings for society ($168Â 000 per graduate; P. A. Muennig, MD, MPH, Department of Health Policy and Management, Mailman School of Public Health, Columbia University, New York, NY, unpublished data, January 2007). Seldom can medical advances do as much for health and society and save money.