WASHINGTON RIANNA BROOKE

Our bodies have a two-pound "microbiome." What does it do?

Various microorganisms live in the human body. Although we link them largely with danger and the risk of infection, they are also involved in numerous physiological processes that aid in the maintenance of good health and the improvement of immunity. Microorganisms live in the gastrointestinal system, impacting digestive processes and supporting immunological function, among other things.