Heavy metal exposure is a research area that focuses on the negative health effects of heavy metals, such as lead, mercury, arsenic, cadmium, and chromium, on human health. These toxic metals can enter the body through various sources, such as contaminated air, water, soil, and food. Chronic exposure to heavy metals has been linked to a wide range of health issues, including neurological disorders, organ damage, developmental delays, and cancer. Researchers in this area study the mechanisms of heavy metal toxicity, sources of exposure, and potential interventions to reduce exposure and mitigate health risks.