Bangladesh Study Warns of Dangerous Lead and Cadmium Levels in Common Vegetables from Industrial Areas

Heavy Metals Found in Bangladesh’s Everyday Vegetables

A new peer-reviewed study published in Biological Trace Element Research has revealed that commonly consumed vegetables in Bangladesh’s Savar industrial zone contain dangerously high levels of toxic heavy metals—particularly lead (Pb) and cadmium (Cd)—posing a serious threat to food safety and human health.

Researchers from Jahangirnagar University and the Bangladesh Council of Scientific and Industrial Research (BCSIR) analyzed six popular vegetables—spinach, pumpkin leaf, brinjal, tomato, potato, and radish—alongside corresponding soil and irrigation water samples. Using Inductively Coupled Plasma–Mass Spectrometry (ICP-MS) and Atomic Absorption Spectrophotometry (AAS), they measured toxic and essential elements in the samples.

What They Found

The study found that:

Lead (Pb) and mercury (Hg) levels in soil were critically high.
Irrigation water exceeded WHO limits for Pb, Cd, and Hg.
Brinjal contained the highest lead concentration (14.48 mg/kg), while spinach accumulated the most cadmium (2.37 mg/kg).
Bioaccumulation factors revealed that cadmium and lead are the most mobile and dangerous elements.

Health Risks for Children

Health risk assessments showed that children are at the greatest risk, with Pb and Cd exposure levels far exceeding safe thresholds, suggesting potential for neurotoxic and renal damage. Researchers warn that chronic exposure through vegetable consumption could have severe long-term health implications.

Call for Action

The authors urge stricter regulation of industrial effluent discharge, routine monitoring of irrigation sources, and public awareness campaigns to prevent heavy metal accumulation in the food chain.

Reference

Mithu, M. M. U., Shormela, S. A., Abdullah, A. T. M., Mubarak, M., Rahman, M. M., Khan, T. A., Moniruzzaman, M., & Islam, Md. S. (2025). Exploring Heavy Metal Bioaccumulation in Vegetables: Unraveling Environmental Pollutants’ Impact on Agricultural Produce and Human Health. Biological Trace Element Research. https://doi.org/10.1007/s12011-025-04871-z