Are the microbes in our gut affecting how fast we age?
The collection of microbial life in the gut, known as the microbiota, may be considered an accessory organ of the gastrointestinal tract. It is a self-contained, multi-cellular, biochemically active mass with specialized functions. Some functions are important for life such as vitamin K synthesis, an essential molecule in blood clotting. Others are responsible for training and maintaining a healthy immune system or digesting indigestible food products such as insoluble fiber.