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Umbilical Cord Blood Lead Level Disparities between Flint and Detroit
Mona Hanna-Attisha1,2, Ashweena Gonuguntla2,3, Nadine Peart1,2
1Pediatric Residency Program, Hurley Children's Hospital at Hurley Medical Center, Flint, Michigan.
American Journal of Perinatology
|March 7, 2020
Summary
Newborns in Flint, Michigan, experienced significantly higher cord blood lead levels (CBLLs) following the water crisis compared to Detroit newborns. This highlights the critical need for lead exposure prevention during pregnancy.
Area of Science:
- Environmental Health
- Pediatric Health
- Toxicology
Background:
- The Flint water crisis led to widespread lead contamination, raising concerns about its impact on vulnerable populations, particularly newborns.
- The neurodevelopmental effects of in utero lead exposure in infants born during the Flint water crisis were largely unknown.
- Assessing cord blood lead levels (CBLLs) provides a direct measure of fetal lead exposure.
Purpose of the Study:
- To investigate and compare CBLLs in newborns from Flint, Michigan, after the water crisis to a control group of newborns from Detroit.
- To determine if the Flint water crisis resulted in elevated lead levels in neonates.
Main Methods:
- A study surveyed mothers of 99 Flint newborns born after lead-in-water contamination was recognized.
- Cord blood lead levels (CBLLs) were measured, and maternal-fetal metrics were reviewed for Flint newborns.
- CBLLs and maternal-fetal metrics were compared to a retrospective cohort of 116 Detroit newborns using descriptive statistics, independent t-tests, and chi-squared analysis.
Main Results:
- CBLLs ≥ 1 μg/dL were significantly more prevalent in Flint newborns (14%) compared to Detroit newborns (2%), a sevenfold disparity (p=0.001).
- No significant differences were observed in birth weight, head circumference, small for gestational age status, gestational age, or preterm status between the two groups.
- The findings indicate a clear impact of the Flint water crisis on in utero lead exposure in newborns.
Conclusions:
- The Flint water crisis posed a risk of in utero lead exposure to newborns, potentially affecting maternal-fetal outcomes and future health.
- Primary prevention strategies focusing on lead exposure identification and mitigation before and during pregnancy are crucial.
- Further research involving new environmental exposure detection methods and long-term neurodevelopmental follow-up is recommended to complement these findings.
