Cancer Death rate gap Widens Based on Education

It is believed that people with lower education are more likely to engage in risky activities. What would those risky activities be? Could it be that people with lower eduction are more likely to be employed in lower paying jobs and are there for more likely to be eating a lot of  hamburger or other mechanically tenderized  meats containing pink slime, as well as a greater percentage of  highly processed food with a proven link to early death. Might many of them  be employed in demolition,  as labourers, in FIRE-FIGHTING or the TRADES and therefore have a much higher exposure to carcinogens (such as asbestos, chemicals, and smoke)?