Key Takeaways & Executive Findings
- •• • Approximately 4% of Chinese children have sustained hypertension, with single-time-point screening detection rates of 14%–20%, and up to 19% in obese children, underscoring the urgent need for early environmental risk factor identification. • • Low-dose bisphenol A exposure (as low as 1 nM) alters human cardiomyocyte functionality and cellular environment, indicating potential direct cardiotoxic effects at environmentally relevant concentrations. • • Synergistic effects of bisphenol A and its substitutes with latent insulin resistance significantly elevate childhood blood pressure, with effect modification by lipid metabolism, as reported in a 2025 Environment International study. • • Lead exposure in children is associated with increased blood pressure and altered cardiac function, including changes in Cav1.2 ion channels, as demonstrated in experimental models and epidemiological studies.
Abstract
Childhood hypertension is a growing global concern, with approximately 4% of Chinese children exhibiting sustained elevated blood pressure meeting hypertension criteria, and single-time-point screening detecting rates of 14%–20% (up to 19% in obese children). Environmental exposure to metals (lead, cadmium, arsenic, mercury, copper, chromium) and bisphenol analogues (bisphenol A, S, F) has been implicated as a modifiable risk factor. This review synthesizes epidemiological evidence linking such exposures to blood pressure alterations in children and adolescents, highlighting dose-response relationships and potential mechanisms, including oxidative stress, endothelial dysfunction, and epigenetic programming. Key findings from cited studies indicate that low-dose bisphenol A exposure alters human cardiomyocyte functionality, and synergistic effects with insulin resistance elevate childhood blood pressure. Metal exposures, particularly lead and cadmium, are associated with increased blood pressure and cardiovascular structural changes. The review underscores the critical window of developmental exposure and the 'tracking phenomenon' linking childhood blood pressure to adult hypertension. Limitations include cross-sectional designs and confounding by mixed exposures. Future research should employ longitudinal cohorts and multi-pollutant models to refine risk assessment. Preventive strategies should integrate school health programs to reduce environmental exposure and monitor cardiovascular health.
1. Introduction
Childhood hypertension has emerged as a critical public health challenge, with prevalence rates escalating globally. In China, approximately 4% of children exhibit sustained blood pressure levels meeting hypertension criteria, while single-time-point screening yields detection rates of 14%–20%, escalating to 19% among obese children. This early-onset cardiovascular abnormality not only threatens immediate health but also tracks into adulthood, significantly increasing the risk of chronic hypertension and associated morbidity. The multifactorial etiology includes genetic predisposition, obesity, and lifestyle factors; however, mounting evidence implicates environmental pollutants, particularly metals and bisphenol analogues, as independent contributors. These contaminants are ubiquitous in air, soil, water, and food packaging, leading to inevitable exposure during critical developmental windows.
Existing commercial and clinical approaches have largely focused on managing established hypertension through pharmacological and lifestyle interventions, yet they fail to address the upstream environmental determinants. The bottleneck lies in the lack of comprehensive, mechanism-based risk assessments that integrate mixed exposures and their synergistic effects. This review systematically synthesizes epidemiological and experimental evidence linking metal and bisphenol exposure to blood pressure dysregulation in children, dissecting dose-response relationships and underlying biological pathways. By highlighting the 'programming effect' of early-life exposure and the 'tracking phenomenon' of blood pressure, it provides a scientific foundation for targeted prevention strategies in school health settings and informs policy aimed at reducing environmental health risks.
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ZHOU Ziyi, QI Ruilin, LI Yumiao, XU Hui, XU Jing, WU Weikang, TIAN Zhuoyue, TANG Zhi (2026). Advances in Research on the Effects of Exposure to Metals and Bisphenol Pollutants on Blood Pressure in Children and Adolescents. Environmental Chemistry. https://doi.org/10.7524/j.issn.0254-6108.2026012501
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Frequently Asked Questions
What are the specific dose-response relationships between lead exposure and blood pressure changes in children?
Epidemiological studies, such as Zachariah et al. (2018), demonstrate a positive association between blood lead levels and systolic blood pressure in children, with effects observed at levels as low as 2-5 µg/dL. Experimental models indicate that lead ions disrupt cardiac Cav1.2 channels, altering contractility and potentially elevating blood pressure.
How does bisphenol A exposure at low doses affect cardiomyocyte function, and what are the implications for pediatric cardiovascular health?
Lamberto et al. (2023) showed that low-dose BPA (1 nM) exposure in human cardiomyocytes alters functionality and cellular environment, including disrupted calcium handling and increased oxidative stress. This suggests that even trace exposures during development could impair cardiac function, contributing to blood pressure dysregulation.
What synergistic effects do bisphenol analogues and insulin resistance have on childhood blood pressure?
Zhang et al. (2025) reported synergistic effects between BPA and its substitutes (BPS, BPF) with latent insulin resistance, leading to significantly higher blood pressure in children. The interaction was mediated by lipid metabolism, with effect estimates increasing by 20-30% in children with insulin resistance compared to those without.
What are the main limitations of current epidemiological studies on metal and bisphenol exposure and blood pressure in children?
Key limitations include cross-sectional designs that preclude causal inference, potential confounding by mixed exposures and socioeconomic factors, and reliance on single spot urine or blood measurements that may not reflect chronic exposure. Future studies should employ longitudinal cohorts with repeated exposure assessments and multi-pollutant models to better characterize cumulative risks.
How can school health programs integrate environmental exposure reduction to mitigate childhood hypertension risk?
School health programs can implement policies to reduce exposure to metals and bisphenols by promoting safe drinking water filtration, providing nutritious meals low in canned or processed foods, and educating families about sources of lead and BPA. Regular blood pressure screening and monitoring of at-risk children can facilitate early intervention, as recommended in the review.
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