Toxins are poisonous substances that are capable of causing disease on contact with or absorption by body tissues. Different types of toxins include naturally occurring compounds such as lead, mercury, formaldehyde, and cadmium; and man-made chemicals like pesticides and bisphenol A (BPA) that is used in the production of plastics. Toxins harm our health by disrupting sensitive biological systems and can also cause Cancer, organ failure, or developmental problems.