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Evaluation of lead levels in children with chronic constipation
Abdurrahman Zarif Güney1, Güzide Doğan2, Ali Toprak1
1Department of Pediatrics, Faculty of Medicine, Bezmialem Vakıf University, İstanbul, Türkiye.
Insights
Children with chronic constipation show higher blood lead levels (BLL) than healthy children. This suggests a link between lead exposure and constipation, highlighting the need for BLL testing in affected children.
Area of Science:
- Pediatric Gastroenterology
- Environmental Health
- Toxicology
Background:
- Chronic constipation is a common pediatric issue with multifactorial causes.
- Lead exposure is a known neurotoxin, but its role in gastrointestinal disorders like constipation is less understood.
- Assessing lead burden in children with constipation is crucial for identifying potential environmental contributors.
Purpose of the Study:
- To compare blood lead levels (BLL) and hair lead levels (HLL) in children with chronic constipation versus healthy controls.
- To investigate the association between lead exposure and the etiology of childhood constipation.
- To explore the correlation between BLL and HLL in pediatric populations.
Main Methods:
- A case-control study involving 84 children with constipation and 84 healthy controls, aged 3-18 years.
- Exclusion of organic diseases through comprehensive medical history, physical examinations, and laboratory tests.
- Analysis of blood and hair samples for lead concentration using standardized methodologies.
Main Results:
- Constipated children exhibited significantly higher BLL (3.66 µg/dL) compared to controls (1.61 µg/dL).
- Nearly half (48.8%) of constipated children exceeded the reference BLL of 3.5 μg/dL, versus only 4.8% of controls.
- No significant difference in HLL was observed between groups; BLL was a more reliable indicator than HLL, which varied by gender and age.
Conclusions:
- A significant association exists between elevated blood lead levels and chronic constipation in children.
- Healthcare providers should consider lead exposure as a potential contributing factor in pediatric constipation.
- Routine BLL testing may be warranted for children presenting with chronic constipation to guide prevention and intervention strategies.
Objectives:
This study aimed to assess blood and hair lead levels (BLL and HLL) in children with chronic constipation and compare them to healthy children; and investigated lead exposure's role in the etiology of constipation. It also explored the correlation between BLL and HLL.
Study Design:
The study included 84 constipated children aged 3-18 years as the case group and an equal number of constipation-free children as controls. Organic diseases were ruled out through history-taking, physical exams and laboratory tests. Blood and hair samples were collected and analyzed for lead levels using standardized methods.
Results:
The constipated children group had significantly higher BLL (3.66 µg/dL) compared to the control group (1.61 µg/dL) with no significant HLL difference. Additionally, 48.8% of constipated children exceeded the reference value of 3.5 μg/dL, in contrast to 4.8% of the control group. BLL was unaffected by gender and age, while HLL were higher in girls and low ages. No significant correlation existed between BLL and HLL. The age of the housing showed a positive correlation with higher BLL and HLL. Lead exposure sources like drinking water, home renovation history, parental smoking, or nearby industrial facilities showed no significant relationships with lead levels.
Conclusions:
Understanding the constipation-lead exposure link is crucial for prevention and intervention. HLL may vary with gender and age due to external lead particles, which is why BLL continues to be a more reliable measure. Healthcare providers should remember to investigate lead exposure risk factors in constipation patients and test BLL when necessary.
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