what eggshells contain, how they are traditionally prepared, potential benefits, important safety considerations, and what current research suggests.
What Are Eggshells Made Of?
Eggshells are composed primarily of calcium carbonate, the same form of calcium found in many commercial calcium supplements.
A typical eggshell contains approximately:
90–95% calcium carbonate
Small amounts of magnesium
Trace amounts of phosphorus
Naturally occurring proteins in the eggshell membrane
Because calcium is essential for bone maintenance, eggshell powder has become a topic of interest among those seeking natural calcium sources.
Why Calcium Is Important
Bone
