Toxins are poisonous substances which are produced naturally by organisms like plants, bacteria, algae, fungi, etc. They are also synthesized by man in the form of chemical pesticides, fungicides, etc. They are liberated into the atmosphere in the form of smoke from industries and into water bodies in the form of industrial effluents. Toxins cause harmful effects in humans in the form of ailments like food poisoning, caused by ingestion of food contaminated by microorganisms; cancer by inhalation of toxic fumes from industries etc. To prevent such ailments which may be fatal, one must take care to minimize exposure to sources of toxins and find alternative options which could help minimize pollution of the environment and make it safer for all organisms living in it.