Certain bacteria live in human intestines where they get food and also help humans break down their food are what?

Certain bacteria that live in human intestines and assist in breaking down food are known as gut microbiota or gut flora. These beneficial microorganisms aid in digestion, produce essential vitamins, and help maintain a healthy immune system. They play a crucial role in the fermentation of dietary fibers, leading to the production of short-chain fatty acids that provide energy for intestinal cells. Overall, they contribute significantly to overall gut health and well-being.