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An ingredient in toothpaste and other personal care products may be harming the microbes in our gut and leaving us vulnerable to disease. Ilya Andriyanov/shutterstock.com

Triclosan, a common antimicrobial in toothpaste and other products, linked to inflammation and cancer in the gut

Triclosan is found in thousands of personal care products from toothpaste to soap. New research links it to inflammation and cancer in the gut in mice, by disrupting their microbiome.
Though examining poop samples scientists working on the American Gut Project are getting a new perspective on the microbes in our guts. By Christos Georghiou/Shutterstock.com

Studying poop samples, scientists find clues on health and disease

In the largest citizen science experiment to date, 11,336 people sent poop samples to this San Diego lab so that microbiologists could figure out how the microbes in our guts make us healthy or sick.
Bacteria in the dish on the left are sensitive to antibiotics in the paper discs. The ones on the right are resistant to four of the seven antibiotics. Dr. Graham Beards

Bacteria may be powerful weapon against antibiotic resistance

Antibiotic-munching microbes may prove useful for mopping up contaminated water supplies and land.

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