While no one knows exactly where the 5 second rule originated. You have probably done it yourself.
The rule states that when food is dropped on the floor, it is safe to eat if picked up within 5 seconds. But is it really true?
Believe it or not, recently a study was done at Rutgers University in New Brunswick, NJ to see if it was true. They dropped 4 different foods on 4 different surfaces allowing contact times of 1 second, 5 second, 30 seconds and 300 seconds. Each was contaminated with bacteria that commonly occur in the human digestive system and allowed to dry.
Watermmelon was the most easily contaminated food, gummy bears the least.
- Carpet had a lower bacteral transfer than stainless steel
- The wetter the food, the higher risk of bacterial transfer
- Although leaving food on the floor longer results in more bacteria being transferred,some bacteria get on food instantly