Related Experiment Video
Updated: Jun 13, 2026
04:48
Setup of Capillary Electrophoresis-Inductively Coupled Plasma Mass Spectrometry (CE-ICP-MS) for Quantification of Iron Redox Species (Fe(II), Fe(III))
Published on: May 4, 2020
Iron, Lead, and Children's Behavior and Cognition
1Department of Nutritional Sciences, Pennsylvania State University, University Park, Pennsylvania 16802, USA. kxk48@psu.edu
Annual Review of Nutrition
|May 4, 2010
Summary
Iron deficiency (ID) and lead exposure independently harm children's cognition and behavior. Further research is needed to understand how these common childhood exposures interact and impact neurodevelopment.
Area of Science:
- Pediatric Environmental Health
- Nutritional Neuroscience
- Developmental Toxicology
Background:
- Iron deficiency (ID) is a prevalent global micronutrient deficiency affecting young children, leading to cognitive and behavioral deficits.
- Lead exposure is a common environmental toxicant in children, also linked to significant behavioral and cognitive impairments.
- Metabolic and physiological links between iron and lead suggest potential overlapping impacts on child development.
Purpose of the Study:
- To explore the potential for increased susceptibility to lead neurotoxicity in children with iron deficiency.
- To investigate the independent and combined effects of iron deficiency and elevated blood lead levels on child neurodevelopment.
Main Methods:
- Review of existing literature on iron deficiency, lead exposure, and neurodevelopmental outcomes in children.
- Analysis of studies examining the independent associations of iron deficiency and blood lead levels with cognition and behavior.
- Identification of gaps in research regarding the interaction between these two exposures.
Main Results:
- Both iron deficiency (ID) and elevated blood lead levels (BLLs) are independently associated with adverse cognitive and behavioral outcomes in children.
- Limited research currently exists on the synergistic effects or increased susceptibility to lead neurotoxicity in children with ID.
- The timing and severity of both iron deficiency and lead exposure are critical factors influencing children's susceptibility.
Conclusions:
- Iron deficiency and lead exposure represent significant, independent risks to children's neurodevelopment.
- Further systematic investigation is warranted to elucidate the complex interplay between iron status and lead toxicity in early childhood.
- Understanding these interactions is crucial for developing targeted interventions to mitigate neurodevelopmental deficits.
Related Concept Videos
01:29Environmental Influences on Intelligence
Despite the strong genetic influence on traits like intelligence, environmental factors significantly shape outcomes. For example, while over 90% of height variation is due to genetic differences, environmental factors such as nutrition also have a notable impact. Similarly, for intelligence, changes in a child's surroundings can significantly alter their IQ. Research shows that enriched environments boost children's academic success and help them develop key cognitive skills. Children from...
01:27The Periodic Table and Organismal Elements
Elements are the smallest units of matter that cannot be broken down further by chemical processes. There are 118 known elements, but not all of these are naturally occurring, and only a few of them are essential for life. Living matter is composed primarily of carbon, nitrogen, hydrogen, and oxygen, with smaller amounts of other elements like calcium, phosphorus, potassium, and sulfur. Other elements are also necessary for life but only in trace amounts.
Periodic Table Provides Information...
Periodic Table Provides Information...
00:57The Periodic Table and Organismal Elements
Elements are the smallest units of matter that cannot be broken down further by chemical processes. There are 118 known elements, but not all of these are naturally-occurring, and fewer still are essential for life. Living matter is composed primarily of carbon, nitrogen, hydrogen, and oxygen, with smaller amounts of other elements like calcium, phosphorus, potassium, and sulfur. Other elements are also necessary for life but only in trace amounts.The Periodic Table Provides Information about...
01:30Attention-Deficit/Hyperactivity Disorder
Attention-deficit/hyperactivity disorder (ADHD) is a neurodevelopmental disorder characterized by persistent inattention, hyperactivity, and impulsivity. It affects approximately 5-8% of children globally, with around 60-70% of cases persisting into adulthood. ADHD has significant implications for educational attainment, social interactions, and occupational success.
Diagnostic Criteria and Symptoms
To diagnose ADHD, symptoms must manifest before age 12 and be evident across multiple settings.
Diagnostic Criteria and Symptoms
To diagnose ADHD, symptoms must manifest before age 12 and be evident across multiple settings.
01:30Biological Influences on Intelligence
Intelligence is often thought to be linked to brain size, but the relationship is more complex than that. While brain size does correlate modestly with some abilities, like verbal skills, the connection is weaker for others, such as spatial reasoning. Other factors, like brain structure, also play crucial roles. For instance, despite Einstein's smaller-than-average brain, his parietal cortex, which is involved in spatial reasoning, was 15% wider, suggesting that neural density might matter more...
01:30Information Processing Approach
The information-processing theory of cognitive development centers on fundamental mental processes, including attention, memory, and problem-solving skills. Researchers in this field examine how cognitive abilities, such as working memory, evolve and influence children's overall development. Studies indicate that children with stronger working memory tend to excel in reading comprehension, math, and problem-solving compared to peers with less efficient memory skills. Low working memory is also...