Ambient PM2.5 exposure and cancer incidence in Nigerian adults: A prospective cohort study.
BACKGROUND Ambient PM2.5 is an IARC Group 1 carcinogen, yet prospective evidence from sub-Saharan Africa remains scarce. We investigated long-term exposure to PM2.5, PM10, and NO₂ and incident cancer risk in a Nigerian adult cohort. METHODS We studied 5621 adults across Lagos, Kano, and Rivers States with median foll...