Solved cryptogram
Your kidneys filter your entire blood supply many times over in the course of a single day.
Biology Facts, sourced to NIDDK.
What it means
They process something like a hundred and eighty liters of fluid a day and return almost all of it, producing a couple of liters of urine from the difference. Each kidney holds around a million filtering units, and the reabsorption step is where the real work happens: the body throws nearly everything out and then carefully takes back the water, salts and sugars it wants to keep.
The claim comes from NIDDK, and the page it comes from was read on 2026-08-27 to confirm it still says this.
This is not the kind of claim that goes out of date, which is why it was set as a puzzle rather than a fact with a shelf life.
Solve it yourself
This fact is a cryptogram here: 74 letters over 21 different ones, graded hard.
- SourceNIDDK
- CollectionBiology Facts
- Difficultyhard
- Length74 letters, 21 of them different
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