A review of studies on blood lead concentrations of traditional Mexican potters.

Abstract

Traditional Mexican potters and their families have been occupationally exposed to lead for centuries; however, studies on blood lead levels (BLL) and their adverse health impact on this population are scarce. There is no safe BLL, even at 1μg/dL there are associated health effects. To systematize and characterize Mexican potters' historic lead exposure through their BLL and associated health outcomes. Using PRISMA guidelines, we conducted a systematic review through January 2021 of published studies on BLL and associated health outcomes in Mexican potters. Fifteen studies containing data from 1980 to 2013 met the inclusion criteria and were published between 1980 and 2018. Study populations ranged from n=5 to n=457, and included adult potters (mean BLL 37.9±16.2μg/dL) and/or their children (mean BLL 22.5±10.5μg/dL). Studies reported on general lead poisoning symptoms, neurotoxic and nephrotoxic outcomes as well as correlated biomarkers. Our results confirm high occupational and para-occupational lead exposure. Despite governmental and non-governmental initiatives to promote lead-free glazes, lead continues to be used by traditional potters and their families.