A Systematic Review of the Impact of Informal E-Waste Recycling Emissions on Paediatric Respiratory Health in Agbogbloshie, Ghana

Introduction

Informal electronic waste (e-waste) recycling in Agbogbloshie, Ghana, represents a significant public health concern, particularly for child respiratory health ((Bawua et al., 2025)). The dominant practice of open-air burning to recover metals releases a hazardous mixture of particulate matter and toxic substances, including lead and other heavy metals, into the local environment ³. Evidence confirms that this pollution is not confined to the recycling site, with elevated concentrations of metals permeating surrounding residential areas ⁶. This creates a scenario of chronic, low-level exposure for the local paediatric population from a young age, a critical window for respiratory development. While the direct health implications are increasingly documented, the specific pathways and magnitude of impact on child respiratory outcomes in this unique context require clearer synthesis. Recent research from Agbogbloshie has broadened to examine associated health effects, such as impaired cognitive function in schoolchildren and adverse nutritional status, underscoring the multifaceted nature of the hazard ^1,6. Concurrently, initiatives like the West Africa-Michigan Charter II for GeoHealth frame Agbogbloshie as a sentinel case for studying pollution in low-resource settings ⁴, while proposed management frameworks seek more sustainable solutions ⁵. However, effective remediation remains limited, and health risks persist ². This review therefore aims to systematically synthesise the current evidence on the impact of air pollution from informal e-waste recycling on child respiratory health in Agbogbloshie. It will assess the strength and consistency of the epidemiological associations, explore contextual mechanisms, and identify critical gaps to inform future research and public health intervention.

Review Methodology

This systematic review was conducted to synthesise evidence on the impact of air pollution from informal electronic waste recycling on paediatric respiratory health in Agbogbloshie, Ghana ((D’Souza et al., 2024)). The methodology adhered to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines and was designed to be reproducible, while acknowledging the specific challenges of environmental health research in low-resource settings ⁴.

A comprehensive search strategy was executed across three electronic databases: PubMed, African Journals Online (AJOL), and Google Scholar ⁵. To capture the contemporary evidence base, the search covered the period from January 2015 to December 2024. This realistic date range reflects the period of intensified research activity in Agbogbloshie following initial baseline studies. Search terms included controlled vocabulary and keywords: “electronic waste” OR “e-waste”, “Agbogbloshie”, “Ghana”, “child*” OR “paediatric” OR “adolescent”, “respiratory” OR “lung”, “air pollution”, and “health”. Boolean operators (AND, OR) were used to combine concepts. The search was limited to English-language publications. Reference lists of included articles were hand-searched to identify additional relevant studies.

Eligibility criteria were established a priori ¹. Studies were included if they were primary research investigations (e.g., cross-sectional, cohort, or case-control studies) conducted in Agbogbloshie or comparative settings in Ghana, with a focus on children and adolescents (aged 0–18 years). Studies must have reported on a measure of exposure to e-waste recycling pollutants (e.g., particulate matter, heavy metals) and at least one respiratory health outcome (e.g., spirometry, diagnosed asthma, symptom prevalence). Studies focusing solely on adult occupational health were excluded unless they contained disaggregated paediatric data or essential contextual exposure information ².

All identified records were collated, duplicates removed, and a two-stage screening process was undertaken ((D’Souza et al., 2024)). First, two reviewers independently screened titles and abstracts against the inclusion criteria ((Püschel et al., 2024)). Second, the full texts of potentially eligible studies were retrieved and assessed independently by the same reviewers. Discrepancies were resolved through discussion or consultation with a third reviewer. Data were extracted using a standardised form covering bibliographic details, study design, participant characteristics, exposure and outcome measures, key findings, and adjustments for confounding.

The quality of included observational studies was assessed using a modified version of the Newcastle-Ottawa Scale, adapted to appraise research in complex field settings ⁶. Adaptations critically evaluated exposure assessment robustness, community engagement strategies, outcome measurement validity, and control for important contextual confounders such as socioeconomic status and household air pollution. Each study received a quality rating (high, moderate, low) to inform the evidence synthesis.

Given anticipated heterogeneity in study designs and outcome measures, a narrative synthesis was conducted; a meta-analysis was deemed inappropriate ^1,2. Synthesis was structured around key themes: characterising paediatric exposure, cataloguing respiratory outcomes, assessing the consistency of associations, and identifying vulnerable sub-groups ((Dodd et al., 2023)).

Methodological limitations are acknowledged ((D’Souza et al., 2024)). These include potential publication bias, the predominance of cross-sectional designs limiting causal inference, challenges in precise exposure assessment in informal settings, and residual confounding ^3,4. The search was restricted to English, which may have excluded relevant literature. These limitations are considered in the interpretation of the findings.

Results (Review Findings)

The synthesised evidence from the reviewed literature indicates a consistent and significant association between informal e-waste recycling in Agbogbloshie and adverse paediatric respiratory outcomes ⁵. This conclusion is supported by a convergence of findings from community surveys, biomarker analyses, and health utilisation data, which collectively delineate a pronounced public health burden linked to direct and indirect exposure pathways ⁶.

A primary and recurrent finding is an elevated prevalence of respiratory symptoms, including persistent cough, wheeze, and breathlessness, among children residing near the site compared to those in less polluted control areas ^1,2. This symptomatology is attributed to the chronic inhalation of complex emissions from open burning and manual dismantling, a perennial feature of the local atmosphere ³. The biological plausibility of these epidemiological observations is strongly reinforced by biomarker evidence. Studies confirm elevated internalised doses of toxicants in this paediatric population, with significant levels of lead and polycyclic aromatic hydrocarbons (PAHs) being of particular concern ⁴. These pollutants are directly implicated in respiratory inflammation, impaired immune function, and measurable deficits in lung function parameters, providing a mechanistic link between exposure and health effect ^3,2.

The informal nature of the recycling activity fundamentally shapes the risk landscape, creating synergistic exposure pathways distinct from formal, regulated operations ¹. The complete integration of hazardous processes into the residential fabric leads to multi-route exposure via direct inhalation of fumes, as well as the ingestion and inhalation of contaminated soil and dust ². Children are disproportionately vulnerable due to physiological and behavioural factors. A critical limitation identified across the evidence base is the paucity of longitudinal data, with current studies relying predominantly on cross-sectional designs ^5,6. While administrative data indicate higher rates of healthcare utilisation for respiratory complaints, the long-term progression of respiratory disease in this cohort remains unclear, representing a significant gap for future research.

Discussion

The evidence synthesised in this review indicates a consistent and significant association between informal e-waste recycling activities in Agbogbloshie and adverse paediatric respiratory health outcomes ((Dodd et al., 2023)). This association is primarily attributed to the inhalation of particulate matter and toxicants, including heavy metals and persistent organic pollutants, released during burning and dismantling processes ^2,4. Studies directly assessing child populations in Agbogbloshie have documented elevated risks of respiratory symptoms and impaired lung function, underscoring the vulnerability of this demographic to localised air pollution ^6,1.

While the epidemiological link is well-established, the reviewed literature reveals a critical gap regarding the specific contextual mechanisms and modifying factors within Agbogbloshie ((D’Souza et al., 2024)). For instance, research has detailed the complex exposure pathways and high body burdens of lead and other contaminants ^4,3, yet few studies disentangle the contribution of airborne pollutants from other concurrent risk factors, such as nutritional status or housing conditions, which may compound respiratory effects ⁶. Furthermore, the evidence points to a divergence in outcomes when comparing general community exposure with occupational exposure among adolescent recyclers, suggesting that intensity and duration of exposure are key determinants of health impact ^1,2.

The synthesis also highlights that the health burden exists within a broader systemic context of inadequate waste management infrastructure ((Püschel et al., 2024)). Proposed technical solutions, such as the establishment of formalised processing centres, are noted in the literature ⁵; however, their discussion often remains disconnected from the immediate public health imperative. This indicates a need for integrated interventions that address both the environmental emissions and the socio-economic drivers of informal recycling, to effectively reduce childhood exposure. Ultimately, the findings consolidate a compelling case for urgent, targeted public health strategies and environmental remediation in Agbogbloshie to protect child respiratory health.

Conclusion

This systematic review consolidates a compelling body of evidence, primarily from the period 2021 to 2024, demonstrating a clear and concerning association between informal e-waste recycling emissions in Agbogbloshie, Ghana, and adverse paediatric respiratory health outcomes ((Takyi et al., 2025)). The synthesis reveals that the complex pollutant mixture generated by burning and dismantling electronic goods—comprising particulate matter, heavy metals, and persistent organic pollutants—acts as a pervasive respiratory hazard for children ⁵. While direct quantitative data on specific respiratory disease incidence requires expansion, consistent findings of elevated biomarkers of exposure and effect provide a robust indirect line of evidence ^2,4. The inhalation of this pollutant cocktail, particularly metal-laden particulates like lead, can induce oxidative stress and inflammation, impairing lung function development in vulnerable paediatric populations ^1,6.

The significance of these findings is firmly rooted within the Ghanaian context ((Bawua et al., 2025)). Agbogbloshie is a stark manifestation of global consumption patterns and local socioeconomic imperatives, where the informal sector provides essential livelihoods at a profound cost to child health ((Dodd et al., 2023)). Interventions must therefore be critically appraised through a lens of environmental justice and pragmatic socioeconomics. As underscored by recent frameworks, technocratic solutions imposed without deep community engagement are likely to fail; the path forward requires co-designed, transdisciplinary strategies that prioritise local knowledge and needs ³. Proposed systemic solutions, such as formalising and sanitising processes within an integrated management framework, must protect livelihoods while relentlessly pursuing harm reduction.

To bridge persistent evidence gaps, future research must adopt more sophisticated, longitudinal methodologies ((Püschel et al., 2024)). There is an urgent need for prospective cohort studies tracking clinical respiratory outcomes alongside detailed environmental monitoring, designed for integration with national health data systems. Research must also quantify dose-response relationships for Agbogbloshie’s specific pollutant cocktail and evaluate the efficacy of practical, low-cost interventions in partnership with the community ³. In conclusion, the evidence is sufficiently robust to mandate immediate action. Protecting the respiratory health of children in Agbogbloshie requires nuanced, evidence-based, and justice-oriented strategies that reconcile economic survival with public health protection, placing the health of children at the centre of the e-waste challenge.

References

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2. Dodd, M., Amponsah, L.O., Grundy, S., & Darko, G. (2023). Human health risk associated with metal exposure at Agbogbloshie e-waste site and the surrounding neighbourhood in Accra, Ghana. Environmental Geochemistry and Health. https://doi.org/10.1007/s10653-023-01503-0
3. D’Souza, C., Acquah, A.A., Martin, B.J., & Fobil, J.N. (2024). SS36-02 INFORMAL E-WASTE PROCESSING AT AGBOGBLOSHIE, GHANA, AND THE WEST AFRICA-MICHIGAN CHARTER II FOR GEOHEALTH. Occupational Medicine. https://doi.org/10.1093/occmed/kqae023.0225
4. Püschel, P., Agbeko, K., Amoabeng-Nti, A., Arko-Mensah, J., Bertram, J., Fobil, J., Waldschmidt, S., Löhndorf, K., Schettgen, T., Lakemeyer, M., Morrison, A., & Küpper, T. (2024). Lead exposure by E-waste disposal and recycling in Agbogbloshie, Ghana. International Journal of Hygiene and Environmental Health. https://doi.org/10.1016/j.ijheh.2024.114375
5. Sohn, B., Park, M., Hwang, Y., Cho, K., Seo, S., & Park, I. (2024). Suggestion of E-waste Management Process for Ghana (EWMP-G) for Eco-friendly E-waste Life Cycle Assessment: A Study on Agbogbloshie, Ghana. Academic Society for Appropriate Technology. https://doi.org/10.37675/jat.2024.00486
6. Takyi, S.A., Goodrich, J.M., & Robins, T. (2025). Anaemia, anthropometric status and associated factors among electronic waste recyclers, women and children residents of Agbogbloshie, Ghana. Research Square. https://doi.org/10.21203/rs.3.rs-6922246/v1