food security. (F) In the context of prisons, overcrowding has led to the deterioration of the physical and mental health of individuals after they leave prison. In particular, the mass incarceration of African-American males as a result of unequal contact with and treatment in the criminal justice system has contributed to an overburdening of certain infectious diseases within the African-American community. As a social institution, incarceration amplifies existing adverse health conditions by concentrating diseases and harm health behaviors such as tobacco use, drug use, and violence. (G) Educational attainment is the strongest predictor of adult mortality. It is a basic component of socioeconomic status by shaping earning potential to access resources that promote health. People with more education are less likely to report that they are in poor health, and are also less likely to have diabetes and other chronic diseases. (H) Similarly, reading ability is a strong predictor of adult health status and is often correlated with other child health issues, such as developmental problems, vision and hearing impairments, and frequent school absence due to illness. (I) Individuals with lower levels of educational attainment are much more likely to report to be current smokers. In 2015, smoking prevalence was 34.1 percent among adults with a GED diploma, 24.2 percent with less than a high school diploma, and 19.8 percent with a high school diploma, while dropping significantly to 7.4 percent among adults with an undergraduate college degree and 3.6 percent with a postgraduate college degree. (J) Social class differences account for a large part of health disparities. For example, children living in poverty experience poorer housing conditions, increased exposure to indoor allergens and toxins (such as pesticides, lead, mercury, radon, air pollution, and carcinogens), and more psychological stress. These experiences culminate in worse adult health as compared with children with higher socioeconomic status.