A college education has a positive impact for men on health and tends to extend lifespan, according to a new study released by the National Bureau of Economic Research (summary available here). The study uses data from the enrollment decisions of men during the Vietnam War era, when going to college greatly decreased the odds of one's being drafted, and so encouraged many men who might not have otherwise gone to college to do so. Looking at these cohorts and tracking them over time, the study finds that going to college decreases the odds of morbidity over time. Decreases are noted for college-going men in the rates of cancer and heart disease. Many factors could be at play, the authors note. The men who completed college, for example, were less likely to be smokers and more likely to have health insurance.