MicrobiomeScientificSharing is Caring: The Skin Microbiome of Intimate Partners

31 May 2022by Dana Walsh0

By Barış Özdinç

Dr. Michael Mosley from the BBC’s Science Focus Magazine brings a new perspective to an age-old topic – why do long-term couples tend to look alike? Is it because long-term couples tend to choose their look-alikes as their partners, or is it due to shared diets, lifestyles, mannerisms, or other factors? To answer this question, a Stanford University research group took advantage of an advanced facial recognition software to assess a database of pictures of 517 couples soon after getting married and then decades later. The findings illustrate that long-term couples tend to look alike because we tend to choose partners who look similar to ourselves, not because we become more similar with age. Despite this finding, a study from University of Waterloo highlights that our skin microbiome does evolve to be more like our partners’ over the years. The study collected skin microbiome samples from multiple body sites of cohabiting couples and then used computer algorithms to predict which couples are cohabiting based on their skin microbiota. The Algorithm identified cohabiting couples with 86% accuracy based on their skin microbiomes alone, underlining the significant impact of cohabitation on skin microbiome composiiton. Perhaps skin microbiome similarity has some role in skin appearance similarity in couples. Despite the significant impact of cohabitation on skin microbiome, there were some body parts where gender played a more significant role than cohabitation on skin microbiome composition. Strikingly, computer algorithms were able to differentiate between male and female with 100% accuracy by analyzing inner thigh skin microbiome samples.

Dana Walsh

Dana Walsh is a microbiome scientist whose career has consisted of a blend of wet bench and computational research. Currently, she is a Microbiome Scientist for CosmosID where she helps clients with custom microbiome analysis and interpretation as well as exploring new tools and methods for microbiome studies. She applies cutting-edge tools to integrate multi-omics data, including taxonomic, functional, meta-transcriptomics and metabolomics data, in order to help clients derive meaning from their results. Her previous work has spanned a range of human microbiome areas and experimental models, from airway to vaginal to gut using cell, mouse, and human models. In her last role at Rebiotix she focused on the analysis and evaluation of complex microbiome data supporting the development of formulations for microbiome-based live biotherapeutic drugs. She completed a postdoctoral fellowship at Mayo Clinic in Rochester, Minnesota (USA), where she investigated the role of the microbiome in cancers of the reproductive tract, including ovarian and endometrial cancer. She received her PhD from the University of North Carolina in Chapel Hill, where she studied the impact of inhaled toxins on the airway microbiome in victims of burn and inhalation injury. In her free time she enjoys teaching Zumba classes and hanging out with her three dogs, 7 month old daughter, and husband on the beach! Fun fact: Dana has been to the top of Mount Kilimanjaro in Tanzania, Africa!

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