To the Editor: Dr Stringhini and colleagues1 showed that well-established behavioral health risk factors, such as smoking, physical inactivity, dietary patterns, and alcohol consumption, explain a considerable part of social class inequalities in mortality, more than observed in previous studies. As suggested by Dr Dunn in the accompanying Editorial,2 unhealthy behaviors are more common among individuals with low socioeconomic status because of the associated stress.
Gross R. Socioeconomic Position and Mortality. JAMA. 2010;304(3):270-271. doi:10.1001/jama.2010.985