New research indicates that residents of neighborhoods with a history of redlining – a New Deal-era policy that denied mortgages for homes in "high-risk" areas, often disenfranchising people of color – are more than twice as likely to head to the emergency rooms for asthma-related health problems than residents of other communities.

Jointly produced by the University of California-Berkeley and the University of California-San Francisco, the analysis released this week also found that the air in once-redlined neighborhoods have significantly higher levels of pollution from diesel engine exhaust, which has been linked to respiratory problems.

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