Gavelek, Spungen, Hoffman-Pennesi, Flannery, Dolan, Dennis, Fitzpatrick 2019 — Lead exposures in older children, women of childbearing age, and adults: FDA TDS 2014-16
This Food Additives & Contaminants: Part A paper from a 7-author FDA team extends the Spungen 2019 FDA Total Diet Study 2014-2016 child Pb exposure analysis to older children (7-17 years), women of childbearing age (16-49 years), and adults (18+ years). Together with Spungen 2019 for the 6-month to 6-year age groups, this paper provides the complete age-stratified U.S. dietary Pb exposure picture from the FDA’s most recent TDS sampling window. The two papers are the FDA’s empirical evidence base for the FDA Closer-to-Zero Pb-in-food work and for the FDA Interim Reference Levels for dietary Pb published in Flannery et al. 2020.
Key conclusions
Per-age-group estimated daily Pb intake from the FDA TDS 2014-2016 is reported with comparison to the FDA IRLs (12.5 µg/day for women of childbearing age and 35 µg/day for older children and adults). The paper confirms that adult and adolescent dietary Pb exposure remains well below the FDA IRLs in the U.S. mean and 95th-percentile diet, while reinforcing the previously-reported finding that baby-and-toddler-targeted matrices carry disproportionately higher per-kilogram-body-weight Pb load.
Implications
- Certification: Comparison-floor reference for HMTc thresholds. The Gavelek finding that adult dietary Pb exposure is below FDA IRLs while infant and toddler exposure is proportionally higher reinforces the case for vulnerable-population-targeted HMTc thresholds on baby-and-toddler product rows.
- Courses: Standard FDA dietary Pb exposure assessment companion to Spungen 2019.