RAY: Biological humans have about ten trillion cells with their own DNA, but there are about one hundred trillion microorganisms in the digestive tract, basically bacteria. MOLLY 2004: Doesn’t sound very appealing. Are they entirely necessary? RAY: They’re actually part of the society of cells that makes Molly alive and thriving. You couldn’t survive without healthy gut bacteria. Assuming your intestinal flora are in good balance, they’re necessary for your well-being.
