What we do and don’t know about gut health

The microbiome inside our bodies dictates many aspects of our health – and is as individual as we are. Inside your gastrointestinal (GI) tract are trillions of micro-organisms, including bacteria, fungi and viruses. You have roughly the same number of micro-organisms in there, mostly in the large intestine, as you do human cells in your entire body. But only 10% to 20% of the bacteria you have in