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Bacteria are tiny microorganisms that exist in group, human mouth can have more than 5 billion different bacteria; some are useful while some are harmful to human health.
Jiyoung Ahn, an associate professor of epidemiology at the New York University school of medicine said people have microbes from the same five main group of bacteria but it may vary from one genus to another.
She said the variability of these bacteria in the month may be linked to people’s cancer risk, her team of researchers discovered that people that have higher Porphyromonas a type of bacteria are at risk of pancreatic cancer.
Earlier research shows that bacteria in the mouth can go throughout the body, interact with receptors on the cells and leads to cancer.