Avoid popping antibiotics in early life as it puts you at cancer risk

Deepak, 05/04/2017
Avoid popping antibiotics in early life as it puts you at cancer risk

You might need to avoid popping those anti-antibiotics as a current study has connected their long haul use to the tumor actuating polyps.

Long term antibiotic use in early to mid life may be linked to a heightened risk of abnormal growths in the colon and rectum, known as polyps or colorectal adenomas, which precede the development of most cases of bowel cancer, revealed the research.

The discoveries add to rising confirmation that the sort and differing qualities of microscopic organisms in the gut, alluded to as the `microbiome,` may have a key part in the improvement of growth, say the specialists.

The research team drew on data from the Nurses Health Study. This has been monitoring the health of 121,700 US nurses who were all aged between 30 and 55 when they entered the study in 1976. Since joining, study participants have filled in detailed questionnaires every two years on demographics, lifestyle factors, medical history and disease development, and every four years on their dietary habits.

For the purposes of the current study, analysis of the data was restricted to 16,642 women who were aged 60 and older in 2004, able to provide a history of antibiotic use between the ages of 20 and 59, and who had had at least one bowel investigation (colonoscopy) between 2004 and 2010.During this period, 1195 adenomas were newly diagnosed in this group.

Recent use of antibiotics within the past four years wasn`t associated with a heightened risk of an adenoma diagnosis, but long term use in the past was.

Compared and the individuals who hadn`t taken antibiotics for any broadened period in their 30s, the individuals who had taken them for two months or more were 36 percent more likely to be diagnosed with an adenoma.

This association held true irrespective of whether the adenoma was considered high or low risk for bowel cancer, but was stronger for growths located in the proximal, rather than the distal, colon.

And compared with women who had not been on antibiotics for any length of time from their 20s to their 50s, those who had taken these drugs for more than 15 days between the ages of 20 and 39, and between the ages of 40 and 59, were 73 percent more likely to be diagnosed with an adenoma.

This is an observational study so no firm conclusions can be drawn about cause and effect, added to which the researchers didn`t gather information on the type or formulation of antibiotic taken, and some adenomas might have been present before antibiotics were used.

Nevertheless, there is a plausible biological explanation for the associations found, they suggested.

Antibiotics fundamentally alter the gut microbiome, by curbing the diversity and number of bacteria, and reducing resistance to `hostile` bugs, they say. Previous research points to depletion of certain types of bacteria and an abundance of others in patients with bowel cancer.

This might all have a crucial role the development of bowel cancer, added to which the bugs that require antibiotics may induce inflammation, which is a known risk for the development of bowel cancer, say the researchers.

"The findings, if confirmed by other studies, suggest the potential need to limit the use of antibiotics and sources of inflammation that may drive tumour formation," concluded the researchers.The study is published online in the journal Gut.

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