“…The human gut microbiome (GM), comprised of trillions of microorganisms, bacteria, viruses, fungi and other life forms, has been implicated in numerous aspects of human health and disease (Lai, Gao, & Zhang, 2020 ). The GM is diverse, personalized, dynamic and can be influenced, especially early in life, by factors such as vaginal/caesarean birth, diet, sleep, contact with other humans and stress (Gacesa et al, 2022 ; Szeligowski, Yun, Lennox, & Burnet, 2020 ). However, genetic factors, especially immunological background also determine a person's microbiome composition (Thaiss, Zmora, Levy, & Elinav, 2016 ).…”