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Environmental pollution from heavy metals (Pb, Cd, Hg, As, Cr) and malnutrition pose serious health risks. Their combined effects cause subclinical damage, particularly in developing nations, necessitating biomarker research for early detection.

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Area of Science:

  • Environmental Health
  • Toxicology
  • Nutritional Science

Background:

  • Chronic low-level exposure to heavy metals (e.g., Pb, Cd, Hg, As, Cr) impacts human and livestock health and nutritional status.
  • Malnutrition and heavy metal exposure independently cause detrimental health effects, including neurological and developmental impairments.
  • The additive impact of undernutrition and heavy metal exposure presents a significant health threat, especially in developing countries.

Purpose of the Study:

  • To review the interaction between pollution (heavy metals) and nutrition.
  • To highlight the importance of biomarkers for early subclinical detection of heavy metal toxicity.
  • To inform policymakers on strategies to mitigate heavy metal exposure and its health consequences.

Main Methods:

  • Literature review compiling results from various studies on pollution-nutrition interaction.
  • Focus on identifying and utilizing biomarkers for early detection of subclinical haemopoietic and renal toxicity.
  • Investigation into non-conventional lead (Pb) exposure sources.

Main Results:

  • Combined effects of undernutrition and heavy metal exposure lead to subclinical organ damage (haemopoietic, renal, nervous systems).
  • High blood levels of lead (Pb) and cadmium (Cd) coupled with low nutrient levels are associated with adverse health outcomes.
  • Biomarkers are crucial for the early detection of toxicity, especially in vulnerable populations like neonates, children, and pregnant women.

Conclusions:

  • The interaction between heavy metal pollution and nutritional status is a critical public health concern.
  • Early detection of subclinical toxicity through biomarkers is essential for timely intervention.
  • Developing effective strategies to combat heavy metal exposure and its health impacts requires a comprehensive understanding of pollution-nutrition interactions.