Dioxins are a group of chemically-related compounds that are persistent environmental pollutants (POPs). These compounds are found in various forms, with polychlorinated dibenzo-p-dioxins (PCDDs) and polychlorinated dibenzofurans (PCDFs) being the most toxic. Dioxins can be released into the environment through industrial processes, combustion activities, and even natural events like volcanic eruptions and forest fires.