“It helps us to understand puzzles in addiction research such as why recovered addicts often relapse after they have broken free of withdrawal symptoms.” The lesson?

Health policy researchers, consultants and program officers may specialize in a particular area of health policy development, research or program administration such as addiction research.

Some research suggests that the explanation for rising rates of mortality, mental-health problems, and addiction among poorly-educated, middle-aged people is a shortage of well-paid jobs.