Are you really outnumbered 10 to 1 by your own gut bacteria?

You have been told you are 10 percent human and 90 percent microbe. That number is a myth.

The gut alone holds tens of trillions of bacteria, but so does the rest of your body in human cells. The best modern count puts it at roughly 38 trillion microbes against 30 trillion human cells - close to 1 to 1, not the 10 to 1 everyone repeats. That old ratio traces to a single rough estimate from 1972 that nobody checked for decades.

Think of a crowded bus at rush hour: for every Vietnamese passenger there is roughly one foreign tourist standing next to them, not nine tourists per local like the rumor claims.

Your microbes roughly match your human cells one for one, so you are about half microbe by cell count - striking, but not the 10 to 1 legend.

When a health article repeats the catchy 10 to 1 figure, you will know it is recycling a debunked guess, and that is a good cue to check the source.

Gut bugs and you: one to one, not ten to one.

Learn the idea and practice English at the same time.