So let’s begin with the basics: what exactly are eggshells? Surprisingly, they are one of the most affordable and efficient natural sources of calcium you can find.
Eggshells are made up of about 95% calcium carbonate, along with trace amounts of magnesium, potassium, zinc, and iron. These are the same minerals your body uses to build and maintain strong bones, teeth, and nails. Structurally, eggshells have three protective layers: a tough outer shell formed by calcium crystals and two inner membranes rich in keratin proteins that help protect against bacteria.
Although many people get enough calcium through regular meals, a large number struggle due to limited food access or restrictive diets. For these individuals, eggshells can offer a low-cost, sustainable calcium alternative.
The good news is that there’s no need to buy expensive eggshell powder from the store—making it at home is incredibly easy.
That said, eggshells are not a cure or a direct prevention for diseases. However, when prepared and used properly, they can support overall health in several indirect ways.