Related Experiment Video
Updated: Mar 12, 2026

Long-term Behavioral and Reproductive Consequences of Embryonic Exposure to Low-dose Toxicants
Published on: March 6, 2018
Current knowledge of environmental exposure in children during the sensitive developmental periods
Norma Helena Perlroth1, Christina Wyss Castelo Branco2
1Universidade Federal do Estado do Rio de Janeiro (UNIRIO), Programa de Pós-Graduação em Enfermagem e Biociências, Rio de Janeiro, RJ, Brazil; Universidade Federal do Estado do Rio de Janeiro (UNIRIO), Departamento de Medicina Geral/Pediatria, Rio de Janeiro, RJ, Brazil.
Insights
Children
Area of Science:
- Environmental health
- Pediatric toxicology
- Developmental biology
Background:
- Children possess unique physiological and behavioral traits, increasing their vulnerability to environmental risks.
- Exposure to environmental contaminants during sensitive developmental periods poses significant health threats.
Purpose of the Study:
- To systematically review the scientific evidence on the risks and effects of environmental contaminant exposure in children.
- To understand the impact of early-life exposure on long-term health outcomes.
Main Methods:
- A comprehensive literature search was conducted in the Bireme database.
- Keywords included "children's health," "environmental exposure," "health vulnerability," "toxicity pathways," and "developmental disabilities."
- Searches were performed across LILACS, MEDLINE, and SciELO systems.
Main Results:
- Environmental exposures can lead to congenital malformations, diarrhea, asthma, cancer, and endocrine/neurological disorders in children.
- These health issues can have lasting negative impacts extending into adulthood.
- Toxicokinetic processes in developing systems and organs are crucial in mediating these effects.
Conclusions:
- There is a significant knowledge gap regarding children's susceptibility to many environmental contaminants.
- Further research and improved surveillance of environmental risks are essential for child health.
- Developing targeted prevention policies is a public health priority.
Objective:
This study aims to identify the scientific evidence on the risks and effects of exposure to environmental contaminants in children during sensitive developmental periods.
Data Source:
The search was performed in the Bireme database, using the terms: children's health, environmental exposure, health vulnerability, toxicity pathways and developmental disabilities in the LILACS, MEDLINE and SciELO systems.
Data Synthesis:
Children differ from adults in their unique physiological and behavioral characteristics and the potential exposure to risks caused by several threats in the environment. Exposure to toxic agents is analyzed through toxicokinetic processes in the several systems and organs during the sensitive phases of child development. The caused effects are reflected in the increased prevalence of congenital malformations, diarrhea, asthma, cancer, endocrine and neurological disorders, among others, with negative impacts throughout adult life.
Conclusion:
To identify the causes and understand the mechanisms involved in the genesis of these diseases is a challenge for science, as there is still a lack of knowledge on children's susceptibility to many environmental contaminants. Prevention policies and more research on child environmental health, improving the recording and surveillance of environmental risks to children's health, should be an ongoing priority in the public health field.
Related Concept Videos
Types of Toxins
Air pollutants, primarily gases, pose significant threats to respiratory health, leading to conditions like hypoxia, lung cancer, and in extreme cases, death.
Environmental pollutants like...
Pharmacokinetics in Pediatric Patients: Drug Metabolism
Pharmacokinetics in Pediatric Patients: Drug Excretion
Gene-Environment Interactions
Attention-Deficit/Hyperactivity Disorder
Diagnostic Criteria and Symptoms
To diagnose ADHD, symptoms must manifest before age 12 and be evident across multiple settings....
Environmental Influences on Intelligence

