For more than a decade, Robin Emmons felt helpless as her older brother lived on the streets, eating out of garbage cans.
She tried repeatedly to get him help for his mental illness, but authorities told her there was nothing they could do.
After he was arrested in 2008 for damaging someone's car during a schizophrenic outburst, she was finally able to become his legal guardian and get him into a halfway house with psychiatric services.
But as she watched his mental health improve, she noticed his physical health getting worse.
"I learned that he was becoming borderline diabetic," she said. "He wasn't like that even when he was homeless."
She investigated and found out that the nonprofit facility was mainly feeding him packaged and canned foods because it couldn't afford fresh fruits and vegetables.
She soon realized, however, that the problem extended well beyond her brother's transitional home. While farmers markets were springing up across the city, she noticed that low-income and working-class neighborhoods had few grocery stores or places to buy fresh produce.
More on food deserts:
"Making groceries" in a New Orleans food desert