Arsenic exposure occurs when individuals come into contact with arsenic, a toxic element found in soil, water, and certain foods. It can enter the body through drinking contaminated water, inhaling dust, or consuming contaminated crops. Long-term exposure can lead to serious health issues, including skin lesions, respiratory problems, and an increased risk of cancer. Sources of arsenic exposure include industrial processes, agricultural practices, and natural occurrences in groundwater. Certain regions, particularly those with high levels of arsenic in their soil or water, are more at risk. Awareness and testing are essential to prevent harmful effects on health.