"An imbalance in the gut flora (not enough bacteria or not the right types) can cause a huge amount of problems. The latest studies of the Human Microbiome, indicates that we are hugely dependent on the microbes living in and on us, and the reverse is true as well. In fact, counting cells, we are more microbes than human! The problem over the last few decades is that we are doing all the wrong things to keep our microbiome healthy. Crappy diets laced with toxins, and overuse of antibiotics are the 2 biggest offenders."
Leaky Gut | A View To Your Health