The participants were taking part in larger, ongoing studies of cancer risk, where they had been given mouthwash samples when they joined the studies. They were followed for nearly 10 years, during which any cancer diagnoses were noted.
When they analyzed the results, Prof. Ahn and colleagues found that participants whose mouth bacteria contained either of two certain types had a higher risk of developing pancreatic cancer, compared with participants whose oral microbiome showed no evidence of the microorganisms.
Specifically, they found presence of Porphyromonas gingivalis was linked to a 59% overall higher risk of developing pancreatic cancer. Similarly, presence of Aggregatibacter actinomycetemcomitans was linked to a 50% overall higher risk. Both types of bacteria are known to be associated with gum disease or periodontitis."
When they analyzed the results, Prof. Ahn and colleagues found that participants whose mouth bacteria contained either of two certain types had a higher risk of developing pancreatic cancer, compared with participants whose oral microbiome showed no evidence of the microorganisms.
Specifically, they found presence of Porphyromonas gingivalis was linked to a 59% overall higher risk of developing pancreatic cancer. Similarly, presence of Aggregatibacter actinomycetemcomitans was linked to a 50% overall higher risk. Both types of bacteria are known to be associated with gum disease or periodontitis."
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