Human Microbiome: A Complex Ecosystem Within Our Bodies

Our bodies are home to a diverse community of microorganisms, including bacteria and viruses. In fact, for every human cell in our bodies, there are about 1.3 bacterial cells, and billions of bacteriophages (viruses) feed on these bacteria in our gut. This thriving ecosystem within us highlights the idea that we are not just one organism but rather a network of interconnected cells, some of which can even exit our bodies and become a part of someone else's microbiome.