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<p>This systematic review synthesises available evidence on the association between environmental pollution and cardiopulmonary diseases among populations residing in the Niger Delta region of Nigeria. Electronic databases were searched from inception to October 2025 following PRISMA guidelines. Twenty‑one observational studies met the inclusion criteria. Environmental exposures were primarily related to gas flaring, oil spills, artisanal refining, traffic emissions, and industrial pollution. Reported outcomes included respiratory symptoms, asthma, chronic obstructive pulmonary disease, reduced lung function indices, and hypertension. Due to substantial heterogeneity in exposure measurements and outcome reporting across studies, a quantitative meta‑analysis was not feasible; therefore, findings were synthesised narratively. The available evidence suggests a possible association between environmental pollution and cardiopulmonary health outcomes in the Niger Delta, although the certainty of the evidence remains low to moderate and should be interpreted with caution due to methodological limitations across the included studies.</p>

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Cardiopulmonary health effects of oil- and gas-related environmental pollution in the Niger Delta, Nigeria: a systematic review of observational studies

  • 期刊论文

  • 发表日期：

    2026年4月18日

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  • Ogechi Peter Obute,
  • Chiara Frazzoli,
  • Kenechi Adachi Aliche,
  • Chika Maurine Ossai,
  • Baridoo Donatus Dooka,
  • Beatrice Bocca,
  • Orish Ebere Orisakwe

摘要

This systematic review synthesises available evidence on the association between environmental pollution and cardiopulmonary diseases among populations residing in the Niger Delta region of Nigeria. Electronic databases were searched from inception to October 2025 following PRISMA guidelines. Twenty‑one observational studies met the inclusion criteria. Environmental exposures were primarily related to gas flaring, oil spills, artisanal refining, traffic emissions, and industrial pollution. Reported outcomes included respiratory symptoms, asthma, chronic obstructive pulmonary disease, reduced lung function indices, and hypertension. Due to substantial heterogeneity in exposure measurements and outcome reporting across studies, a quantitative meta‑analysis was not feasible; therefore, findings were synthesised narratively. The available evidence suggests a possible association between environmental pollution and cardiopulmonary health outcomes in the Niger Delta, although the certainty of the evidence remains low to moderate and should be interpreted with caution due to methodological limitations across the included studies.