Do you really know? Is the five second rule a real thing?
Jan 4, 2026
What do you do when food hits the floor? The podcast dives into the infamous five-second rule, backed by a Rutgers University study. Discover how contact time, surface, and food type impact bacterial transfer. From watermelon to carpet, some combinations are surprisingly risky. While most healthy individuals face low danger, pregnant and immunocompromised folks should be more cautious. Tune in for an entertaining exploration of food safety, germs, and the surprising science behind what we eat off the floor!
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Contact Time Still Spreads Bacteria
- Rutgers University found bacteria transfer occurred even with contact times under one second.
- The longer food stayed on the floor, the more bacteria it picked up.
Surface And Moisture Drive Contamination
- Moist foods like watermelon pick up far more bacteria than dry, rigid foods like gummy candy.
- Carpet transferred the least bacteria while steel and ceramic transferred more, with wood varying.
Crisps Stayed Relatively Safe In A Study
- Aston University found rigid foods like crisps and biscuits remain relatively safe even after 30 minutes on the floor.
- They pick up bacteria on impact but don't accumulate much more over time.