The presence of either synthetic or natural chemicals, poisons and toxins in soil, food, water and air can potentially effect human health. Substances to which people may be exposed include:
- heavy metals such as arsenic, cadmium or lead
- pesticides such as
dichlorodiphenyltrichloroethane (DDT) or chlorpyrifos
- industrial chemicals or wastes such as dioxins and polychlorinated biphenyls (PCBs)
- chemicals that persist in the environment such as per- and polyfluoroalkyl substances (PFAS)
- natural substances such as toxins from algae or fish.
Toxicology is a key tool used to assess perceived and actual health risks to humans from chemicals.
Useful publications and resources