US researchers used data from the Dallas Heart Survey and found that people who moved to more socio-economically deprived neighborhoods gained more weight.

Researchers used data from the Dallas Heart Survey (DHS), a probability-based sample of over 3,000 Dallas County residents aged 18-65 years.
The study began between 2000 and 2002 and a seven-year follow-up was conducted between 2007 and 2009, at which time 1,835 participants completed a detailed survey, anthropometric measures, and laboratory testing.
Each participant was linked to Dallas County census block groups, and a neighborhood Deprivation Index (NDI) was calculated for each block group.
Among people who relocated, 263 participants moved to a higher-NDI neighborhood, 586 to a lower-NDI neighborhood, 47 participants moved but had no NDI change, and 939 participants remained in the same neighborhood.
Those who moved to higher-NDI areas gained more weight compared to those who remained at the same NDI or moved to lower NDI. (0.64 kg per 1-unit NDI increase).
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The study was published in the American Journal of Preventive Medicine.
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