Impact of Heavy Metal Exposure on Cardiovascular Health: A Comprehensive Review and Meta-Analysis Involving 324,331 Individuals - Summary - MDSpire

Impact of Heavy Metal Exposure on Cardiovascular Health: A Comprehensive Review and Meta-Analysis Involving 324,331 Individuals

  • By

  • Shamikha Cheema

  • Syed Ibad Hussain

  • Muhammad Shaheer Bin Faheem

  • Amna Amir Jalal

  • Mohamed Rifai

  • Areej Dar

  • Muhammad Burhan

  • Areeba Shahid

  • Muhammad Seerat Ali

  • Amna Anwar

  • Misha Khalid

  • Sumaya Samadi

  • November 7, 2025

  • 0 min

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Objective:

To quantify the links between specific heavy metals (arsenic, cadmium, lead, mercury) and cardiovascular disease (CVD), investigate dose–response relationships, and examine geographic, genetic, and sex-based variability.

Key Findings:
  • Chronic exposure to arsenic, cadmium, and lead is significantly associated with increased CVD risk, with relative risks ranging from 1.23 to 2.22, while mercury showed no significant link.
  • Gaps exist in understanding interactions between metal combinations and the impact of new contaminants like cobalt and nickel, which require further investigation.
Interpretation:

Heavy metals are critical environmental risk factors for cardiovascular diseases, necessitating updated research and public health policies, particularly in low- and middle-income countries where exposure is prevalent.

Limitations:
  • Most studies focused on high-income regions, neglecting low- and middle-income countries, which may lead to an underestimation of global CVD risk associated with heavy metals.
  • Interactions between different heavy metals and their combined effects on health are under-researched, limiting the understanding of their cumulative impact.
Conclusion:

The study emphasizes the need for a comprehensive understanding of heavy metal exposure and its implications for cardiovascular health, advocating for global prevention strategies.

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