Elemental Exposure and Attention-Deficit Hyperactivity Disorder Risk in Population Aged 6-16 Years: Associations and
Sainan Li1,2, Xiaoli Li3,4,5, Hai Lin1,2
1Institute of Reproductive and Child Health/National Health Commission Key Laboratory of Reproductive Health, Department of Epidemiology and Biostatistics, School of Public Health, Peking University, Beijing 100191, China.
Environmental Science & Technology
|January 8, 2026
Summary
Heavy metal exposure is linked to increased attention-deficit hyperactivity disorder (ADHD) risk, with oxylipins mediating this association. This study highlights the complex interplay between environmental elements, inflammation, and ADHD development.
Area of Science:
- Environmental Health
- Neurodevelopmental Disorders
- Biochemistry
Background:
- Attention-deficit hyperactivity disorder (ADHD) etiology is multifactorial.
- Heavy metals are implicated in inflammatory processes via oxylipins.
- Understanding elemental exposure's role in ADHD is crucial.
Purpose of the Study:
- To evaluate the relationship between elemental exposure, oxylipin alterations, and ADHD risk.
- To elucidate the mediating role of oxylipins in elemental exposure and ADHD risk.
- To identify key elements and oxylipins involved in ADHD pathogenesis.
Main Methods:
- Case-control study design with 561 children for elemental analysis and 151 for oxylipins.
- Logistic regression and elastic net regression for element association and selection.
- Bayesian kernel machine regression and quantile g-computation for mixture effects and mediation analysis.
Main Results:
- 11 key elements were significantly associated with ADHD risk.
- Combined elemental exposure increased ADHD odds (OR 1.72; 95% CI: 1.56, 1.90).
- Oxylipins mediated 13.3% of the association between elemental exposure and ADHD risk.
Conclusions:
- Elemental exposure is a significant risk factor for ADHD.
- Oxylipins play a mediating role in the elemental exposure-ADHD link.
- Findings provide insights into ADHD etiology and potential therapeutic targets.
Related Concept Videos
01:30Attention-Deficit/Hyperactivity Disorder
736
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....
736
01:36Types of Toxins
3.1K
Humans continually engage with an environment rich in potentially harmful chemicals. These are introduced to our bodies through inhalation, ingestion, or skin contact. These chemicals exist in various forms, such as air and environmental pollutants, agricultural chemicals, organic solvents, and heavy metals.
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...
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...
3.1K
01:27The Periodic Table and Organismal Elements
22.1K
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...
22.1K
01:30Oppositional Defiant Disorder
614
A persistent pattern of angry or irritable mood, defiant behavior, or vindictiveness characterizes Oppositional Defiant Disorder (ODD). Symptoms must occur over at least six months, involve interactions with individuals beyond siblings, and meet specific diagnostic criteria to be clinically significant. The disorder affects emotional regulation, social interactions, and behavior, often manifesting early in life and influencing long-term development and functioning.
Diagnostic Criteria and...
Diagnostic Criteria and...
614
01:28Human Genetics
1.4K
Human genetics provides a profound framework for understanding the interplay between genetic predispositions and human psychology. At the heart of this discipline lies the study of how genes influence physical traits, behaviors, and susceptibility to diseases. Each person carries a unique genetic code that subtly or significantly shapes their psychological and behavioral landscape.
The complex relationship between genetics and psychology is observable through common biological components such...
The complex relationship between genetics and psychology is observable through common biological components such...
1.4K
01:20Radical Autoxidation
3.1K
The oxidation of an organic compound in the presence of air or oxygen is called autoxidation. For example, cumene reacts with oxygen to form hydroperoxide. Autoxidation involves initiation, propagation, and termination steps. Many organic compounds are susceptible to autoxidation—especially ethers in the presence of oxygen, which form hydroperoxides. Even though this reaction is slow, old ether bottles contain small amounts of peroxide, which leads to laboratory explosions during ether...
3.1K