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Effect of early lead exposure on the maturation of children's postural balance: a longitudinal study
Amit Bhattacharya1, Rakesh Shukla, Kim N Dietrich
1Department of Environmental Health, University of Cincinnati College of Medicine, Cincinnati, Ohio 45267-0056, USA. bhattaat@uc.edu
Insights
Early childhood lead exposure significantly impairs the development of children's postural balance. Children with higher lead levels showed delayed maturation, potentially impacting adult daily activities and increasing injury risk.
Area of Science:
- Environmental Health
- Developmental Pediatrics
- Neuroscience
Background:
- Lead exposure in early childhood is a significant public health concern.
- Postural balance is critical for childhood development and injury prevention.
- The long-term effects of early lead exposure on motor development require further investigation.
Purpose of the Study:
- To investigate the impact of early lead exposure on the maturation of postural balance in children.
- To determine if lead exposure affects age-associated improvements in postural control.
- To assess the long-term consequences of impaired postural balance in adulthood.
Main Methods:
- Prospective study design involving 91 children from the Cincinnati Lead Study (CLS).
- Measurement of 5-year geometric mean blood lead concentration.
- Repeated assessments of postural balance from mean age 6.6 to 12.1 years.
Main Results:
- Low to moderate lead exposure demonstrated a statistically significant negative impact on postural balance maturation.
- Children in the higher lead exposure group exhibited impaired postural balance compared to less exposed peers.
- Evidence suggests lead-exposed children require more time to achieve mature postural balance.
Conclusions:
- Early childhood lead exposure has lasting detrimental effects on postural balance development.
- Impaired postural balance in adulthood may increase risks for daily living challenges and injuries.
- Public health interventions aimed at reducing lead exposure are crucial for child development.
Abstract:
This prospective study investigated the impact of early exposure to lead on the maturation of children's postural balance. The effect of lead exposure on age-associated maturation of postural balance was investigated on 91 children from the Cincinnati Lead Study (CLS) with a 5-year geometric mean lead concentration in blood of 11.66 microg/dL (range 3.89-28.33 microg/dL) by re-assessing their postural balance approximately every 20 months starting at mean age of 6.6 years through mean age of 12.1 years. The results presented in this paper provide evidence that low to moderate lead exposure in early childhood has a measurable and statistically significant impact on the maturation of postural balance. In comparison to less exposed children, of those in the higher lead group showed an impaired postural balance response. The results from this study suggest that children with early childhood lead exposure may need additional time to approach (or "catch up" with) their maturational postural balance status. As these subjects are now adults in their early to mid-twenties, poor postural balance may impact their daily living tasks and pose a higher risk of potential injuries at home and work.
