Importantly, standardized eggshell-membrane supplements are not equivalent to homemade eggshell powder. Evidence for one should not automatically be applied to the other.
Does Boiling Eggshells Create Healing Properties?
No.
Boiling primarily helps reduce microbial contamination, which is important because raw eggshells can potentially carry bacteria such as Salmonella.
There is no good evidence that boiling eggshells creates special healing compounds or dramatically increases their ability to treat disease.
In other words:
Boiling may make eggshells safer to handle or consume, but it does not turn them into medicine.
