https://www.sciencedaily.com/releases/2018/05/180524174544.htm

To examine the relationship between unhealthy behaviors, chronic stress, and risk of depression by race and ethnicity, researchers used data collected on 12,272 participants, aged 40 to 70 years, from 2005 to 2012. These data were part of the National Health and Nutrition Examination Survey (NHANES), a nationally representative health interview and examination survey of U.S. adults. This age range population was selected for this study to capture the effects of chronic stress over the lifetime of the participants.

"Understanding the social and behavioral complexities associated with depression and unhealthy behaviors by race/ethnicity can help us understand how to best improve overall health," said Pérez-Stable.