Fecal transplants cure diarrhea, modulate testosterone levels
Nutella was not used as a placebo control.From some perspectives, we humans aren't really so much individuals as we are walking ecosystems—our bodies carry more bacterial cells—with their own genomes and agendas—than the total count of human cells we're composed of. Bacteria cover our skin, get to our food before we have the chance to absorb it, and in many cases stay helpfully out of the way of the immune system.
Fighting bacteria with bacteria
Bacteria, sex, and immunity
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