How many bacteria live in and on your body?

Q: How many bacteria live in and on your body?

38 trillion bacteria (38,000,000,000,000). Slightly more bacterial cells than human ones. You are, by headcount, mostly not you. Source: PLOS Biology, 2016

38 trillion

bacteria

38,000,000,000,000 exactly, give or take

Slightly more bacterial cells than human ones. You are, by headcount, mostly not you.SOURCEPLOS Biology, 2016

Scale check: 38 trillion is roughly seconds in 320,000 years.

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