Bryan Hoelzer & Kathryn Hoelzer Team Hoelzer
Bryan Hoelzer & Kathryn Hoelzer Team Hoelzer
TEAM HOELZER NEWSLETTER

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THE FIVE-SECOND RULE: FACT OR FICTION?



Does food dropped on the floor really stay safe to eat if picked up within five seconds? The popular "five-second rule" suggests bacteria don’t have enough time to transfer, but science paints a different picture.


Researchers have tested this belief across various settings. Jillian Clarke, a high school senior, conducted experiments with gummy bears and cookies on tiles contaminated with bacteria. Her findings? Bacteria transferred to food almost instantly, debunking the notion that five seconds offers any protection.

Paul Dawson, a food scientist, took this research further, testing bologna dropped on contaminated tiles. His results showed that more than 99% of bacteria transferred within five seconds. “The five-second rule is just baloney,” Dawson concluded.

In another study, microbiologist Anthony Hilton found that contact time mattered—longer contact increased bacteria transfer—but even short exposures weren’t entirely safe. Although Hilton’s findings hinted at nuances in bacterial transfer, they didn’t provide solid evidence for the rule.

A more comprehensive study by Donald Schaffner and Robyn Miranda at Rutgers University tested different foods (like watermelon and gummies) on various surfaces. Their results showed bacteria could transfer in under a second, depending on the food and the surface. In short, the five-second rule doesn’t hold up scientifically.



HOW DIRTY IS YOUR FLOOR?
Whether eating dropped food makes you sick depends on factors like floor cleanliness and the bacteria present. Charles P. Gerba, a microbiologist from the University of Arizona, highlights the kitchen floor as one of the germiest areas in a home. It sees heavy foot traffic and often has food debris, creating a haven for bacteria. While most bacteria are harmless, some, like Salmonella and Campylobacter, can cause foodborne illnesses.

Surprisingly, the kitchen is often germier than the restroom due to moisture, food particles, and frequent use. Even rinsing dropped food doesn’t guarantee safety, as bacteria can cling to surfaces. Gerba recommends extra caution with items like meat, which are harder to clean effectively.

So, the next time you drop a snack, think twice before popping it into your mouth. Bacteria move fast, and no food is immune to contamination—even in seconds. Is that bacteria-ridden cookie really worth it?












  





















     
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Bryan Hoelzer & Kathryn Hoelzer Team Hoelzer 
513-839-5595 | 513-839-5003
[email protected]

         



       


                   

   



 
Bryan Hoelzer & Kathryn Hoelzer Team Hoelzer 
513-839-5595 | 513-839-5003
[email protected]




   



   



 
Bryan Hoelzer & Kathryn Hoelzer Team Hoelzer 
513-839-5595 | 513-839-5003
[email protected]