14 August 2013
Updated at 11:10 ET
Mouth bacteria may trigger bowel cancer
Inside the mouth
The mouth is home to millions of bacteria
Related Stories
Sweet snacks 'link to bowel cancer'
Male bowel cancer 'on the increase'
'Floss for fertility', women told
Researchers say they have uncovered how bacteria may set off a chain reaction leading to bowel cancer.
link-
http://www.bbc.co.uk/news/health-23687321