It is an awesome fact of nature that we have trillions of organisms within our body – containing completely foreign DNA – some of which break down toxic chemicals that we humans have created to kill other things, but are now killing us, e.g. pesticides. Who are these strange helpers?
Wait. Aren’t bacteria supposed to harm us? Aren’t they the enemy in the endless war against infection?
Well, when our immunity fails, some can grow out of bounds opportunistically. But they respond to the environment within which they are raised, not unlike most other creatures. Provide organic, wholesome vegetables, for instance, and you have a hotbed of positive activity in your gut. Provide sugar, processed foods and an increasing burden of chemicals and it can get ugly in there!