The Possible Involvement of Protozoans in Causing Cancer in Human

In the past few years, it has already been proved that microbial origin of cancer exists and these oncogenic microbes are infectious in nature. After bacteria viruses, protozoans have also found to cause humans animals. They eukaryotic, unicellular, anthropozoonotic microorganisms causing several life-threatening diseases humans. While aplethora goodpieces information was gathered while documenting role humans, only Plasmodium falciparum categorized by IARC as Group 2A carcinogen. However, certain other protozoan parasites got their ability via integration DNA sequences host cells. Protozoans stimulation cell division proliferation cells release reactive oxygen nitrogen radicals, damage p53 gene inhibition. The present review discusses some cancer-causing like Leishmania donovani, Trypanosoma brucie, Toxoplasma gondii, Trichomonas vaginalis, Blastocystis hominis, Theileria microti Cryptosporidium parvum including light recent researches done so far field cancer.