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Sharing Microbes
Study looks at the microbial connection we have with our pets

New research from the University of Colorado Boulder shows that we are more connected to our dogs than we think!

The study published earlier this month looked at microbes and the ways they're transferred between family members, both human and canine. Previous research suggests that microbe sharing is linked to living together, but studies have only looked at humans. Professor Rob Knight, the lead on the University of Colorado study, wanted to include dogs in his research. "Since so many people consider their pets truly a part of the family, it seemed appropriate to include them in a study involving family structure."

Professor Knight and his team sampled 159 people and 36 dogs in 60 families from their tongue, forehead, palms/paws, and fecal sample with the ultimate goal of working towards disease prevention and better treatments.

Interestingly (and not surprising to animal lovers) the team detected a strong link between people and their pets. The microbial connection appeared to be stronger between parents and family dogs than between parents and children. Also, people shared more skin bacteria with their spouse if they had a dog.

We have about 100 trillion microbes in and on our body, but that's not necessarily a bad thing. For example, some scientists believe that children who grow up with a lack of exposure to bacteria and microorganisms may be more prone to getting sick. Many microbes have co-evolved with people to be beneficial.

Curious what microbes you and your dog are carrying? Professor Knight is also involved in the related American Gut project, a crowdfunded effort that allows people to learn more about their own microbes, as well as their dog's. The results from a kit will allow you to compare the microbes in your gut to thousands of other people.  Not only will you learn more about yourself and your family, the data will also be shared with scientists for research.

The microbes living in our body can be affected by diet and other lifestyle decisions, having a significant impact on overall health. Scientists hope to one day develop biomarkers that would predict gut health based on a spit sample, hand swab, or even by a plaque sample from your teeth.

I loved what Professor Knight said about including pets in any research related to family structure. Hopefully more scientists will take note!

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JoAnna Lou is a New York City-based researcher, writer and agility enthusiast.
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