About 90% of the cells in the human body are microbial, consisting of bacteria, viruses, and fungi, mostly residing in the gut, rather than human cells.
Field
Microbiology, Human Biology
Evidence Quality
Well-Documented
Why It Matters
This counterintuitive ratio highlights the symbiotic relationship with our microbiome, which vastly outnumbers our own cells and profoundly influences our health.
Source Consensus
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