What Causes Blood Spots in Eggs?

A common myth is that blood spots mean the egg has been fertilized—but that’s not true. These spots form when tiny blood vessels in the hen’s reproductive system burst during the formation of the egg.

If the blood spot appears in the yolk, it means bleeding occurred in the ovary when the yolk was released from the follicle. If it shows up in the egg white, the bleeding happened a bit later, while the egg was moving through the oviduct.

Proper Storage and Cooking Are Key
Whether or not an egg contains a blood spot, following correct storage and cooking practices is vital for food safety.

How to Store Eggs:

Refrigerate store-bought eggs at all times.
Farm-fresh eggs can be stored at room temperature, but should be kept in a cool, dark area.
Discard eggs with cracked shells, as bacteria can easily enter through the cracks