Dioxin poisoning results from heavy exposure to the environmental toxin dioxin. Humans are typically exposed to dioxin through contamination of the food chain, although chemical explosions and plant emissions have been responsible for poisoning large numbers of people in geographic areas.
Dioxin poisoning in humans causes a number of severe health conditions, including tumors, developmental abnormalities, damage to the nervous system, thyroid and immune system disorders, endometriosis and diabetes. Along with those effects, studies in animals have shown that dioxin exposure leads to birth defects, cancer, enodcrine disruption, immunosuppression and liver toxicity. Large-scale dioxin poisoning led to the Irish pork crisis in 2008.