Most people who eat eggs as part of a healthy diet tend to throw away the shells without a second thought. Yet, these discarded shells hold impressive health benefits that few are aware of.
What Are Eggshells, Really?
Eggshells are one of the most affordable and natural sources of calcium available. They’re composed of about 95% calcium carbonate, along with trace amounts of magnesium, potassium, zinc, and iron. These minerals are essential for building strong bones, teeth, and nails.
Structurally, eggshells consist of three layers:
A hard outer shell made of calcium crystals.
Two inner membranes rich in keratin proteins that act as a barrier against bacteria.
Why You Shouldn’t Discard Eggshells
While many people get enough calcium from their diet, others—especially those with dietary restrictions or limited food access—can benefit greatly from eggshells as a sustainable calcium supplement. The best part? You can easily prepare it at home instead of buying costly calcium powders.
