Heavy Metal Bioaccumulation in Peruvian Food and Medicinal Products

Area of Science:

• Environmental Science
• Public Health
• Food Safety

Background:

• Metal(loid) exposure poses a significant risk to human health, particularly in under-communicated regions.
• Bioaccumulation of toxic metals in food and medicinal products is a growing global concern.
• Peru's unique biodiversity and geological characteristics may influence metal(loid) distribution in local products.

Purpose of the Study:

• To synthesize scientific literature on metal(loid) bioaccumulation in Peruvian food and medicinal products.
• To identify regional sources of metal(loid) exposure in Peru.
• To assess compliance with World Health Organization (WHO) standards for metal(loid)s in local products.

Main Methods:

• Systematic literature review of 231 scientific publications from Peruvian universities and other sources.
• Analysis of 1907 individual analyses covering 16 toxic metal(loid)s (e.g., Hg, As, Cd, Pb).
• Categorization of 239 species into five groups: plants, fish, macroinvertebrates/mollusks, mammals, and "others".

Main Results:

• Significant metal(loid) bioaccumulation was found in various Peruvian food and medicinal products.
• Cadmium (Cd) and Lead (Pb) frequently exceeded WHO standards, alongside concerning levels of Hg, Al, As, Cr, and Ni.
• Metal concentrations in Peru were often higher than those reported globally, with geographical location influencing levels.

Conclusions:

• Peruvian food and medicinal products present a public health risk due to high metal(loid) contamination.
• Existing WHO regulations are insufficient for many identified harmful metals and products.
• There is an urgent need for expanded research, stricter regulations, and targeted interventions to ensure consumer safety in Peru.