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← ALL CASE FILESCASE 03 / THE FIVE-SECOND RULE
THE CLAIM / THE FIVE-SECOND RULE

Does the five-second rule make dropped food safe?

Our pizza hero has five seconds. Bacteria do not follow a stopwatch.

THE VERDICTMYTH

What the cartoon shows

A slice hits the floor, the hero dives, and imaginary skateboard microbes rush in. The microbes are a visual joke; the time limit is the claim being tested.

What the source actually says

In controlled laboratory tests, researchers placed watermelon, bread, buttered bread and gummy candy on inoculated surfaces for different contact times. Some bacterial transfer happened in less than one second. Longer contact sometimes increased transfer, while the food and surface also mattered.

Where the evidence stops

The experiment did not test pizza. It used a nonpathogenic test organism and measured bacterial transfer, not whether someone became ill. It does show why a quick pickup cannot guarantee that food is clean.

The useful takeaway

Consider the surface and the food, especially if the food is moist or ready to eat. A five-second countdown is not a food-safety test.

CHECK THE SOURCEMiranda and Schaffner, Applied and Environmental Microbiology (2016) ↗General food education and entertainment. The animated scenes are fictional; this is not personal medical advice.