From a big-picture point of view its benefits the second brain of our bodies, our gut. Our gut is referred to as the second brain because neuro-transmitters are actually formed in our guts. There is an intimate link between our brain and our gut, the physical connector being the vagus nerve. Information from our inner organs (including our gut and liver) is carried to our brain through the vagus nerve as a function of the parasympathetic nervous system.
Good gut health is essential to the overall wellbeing of our bodies, moderated by our brains. Poor gut health leads to the body playing catch-up, and when it cannot keep up, the body loses the self-healing game and deteriorates. Of course this is putting it simply; but from a big-picture, this is the general idea for why maintaining good gut health is essential for the body’s organs to function properly.