← Back to the collection

Your body / DAY 03 OF 40

You are not ten times more bacteria.

A popular body fact needed a recount.

Here's the strange part.

The claim that your bacteria outnumber your own cells ten to one needed a recount. A revised calculation for a reference adult put the ratio nearer 1.3 to one. It combines estimates of bacterial density, colon volume and human cell counts; nobody counted every cell in a whole person. The useful takeaway is a corrected order of magnitude, not a personal census. (PLOS Biology, via PubMed Central)

KEEP IT HONEST

The roughly 1.3-to-1 estimate refers to a reference adult and varies between people. It is not a universal exact ratio.

REALITY CHECK · TRUE OR FALSE?

Your microbes would like a recount.

The revised ratio is an exact number shared by every person.

Your 40-day trail ↗

Go straight to the receipts.

Curious about the methods, dates or details? Open the original source and keep the caveat in view.

ORIGINAL SOURCEPLOS Biology, via PubMed CentralOpen publication ↗NEXT IN THE 40-DAY TRAIL / DAY 04Cathedral glass is not slowly melting. ↗