The first study of its kind has found that people who vape have the same mix of gut bacteria as non-smokers, whilst smokers have significant changes to their microbiome.
The international team of researchers led by Newcastle University, analysed the bacteria of tobacco smokers, users of e-cigarettes and non-smokers from samples throughout the digestive tract, including in the mouth and gut.
Significant changes were found in the gut bacteria of the smokers, with an increase in the Prevotella bacteria which is linked to an increased risk of colon cancer and colitis.
There was also a decrease in the presence of Bacteroides in smokers, a beneficial bacteria or probiotic. A lower level of Bacteroides has been associated with Crohn’s disease and obesity.