Why Are Eggs Always Refrigerated in the United States While Other Countries Leave Them on Shelves? The Surprising Reason Most People Don’t Realize

Why Other Countries Don’t Refrigerate Eggs

In many European countries and other parts of the world, eggs are not washed before being sold. Because the cuticle remains intact, eggs retain their natural protection against bacteria.

These countries often focus on different safety measures instead, such as strict farm hygiene standards and widespread vaccination of hens against Salmonella. With the cuticle preserved and bacterial risks reduced at the source, eggs can be stored safely at room temperature for a reasonable amount of time.

However, once an egg has been washed and refrigerated—as is standard in the U.S.—it should never be left out again. Temperature changes can cause condensation to form on the shell, creating a moist environment that encourages bacterial growth.


Shelf Life: Refrigerated vs. Room Temperature

Refrigeration doesn’t just improve safety—it also extends freshness.

Cold-stored eggs maintain their quality for weeks longer than eggs kept at room temperature. The whites stay thicker, the yolks remain firm, and spoilage occurs much more slowly.

Room-temperature eggs deteriorate faster, especially in warmer environments. While they may be safe for short periods when unwashed, they are more vulnerable to changes in temperature, humidity, and handling.

This longer shelf life is one reason refrigeration fits well with the large-scale distribution system used in the United States.


Proper Egg Storage at Home

Once eggs are refrigerated, consistency is crucial. To keep eggs safe and fresh at home:

  • Store eggs in their original carton to protect them from absorbing odors.

  • Keep them in the main body of the refrigerator, not the door, where temperatures fluctuate.

  • Avoid washing eggs again at home, as this can further damage the shell.

  • Do not leave refrigerated eggs out at room temperature for extended periods.

If eggs are accidentally left out for several hours, it’s safest to discard them rather than risk foodborne illness.

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