Ixel Hernandez-Castro grew up next to a dairy farm near Fresno, where she remembers a plane would fly by on weekends and spray the fields surrounding her family home with pesticides.

“They’d finish spraying, and we’d run outside to play,” said Hernandez-Castro, MPH, a doctoral student in epidemiology in the Department of Population and Public Health Sciences at the Keck School of Medicine of USC. “For kids, there’s a lot of touching the environment, rolling on the grass, eating while playing, so though I didn’t know it at the time, I was being exposed to these pesticides.”

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