Thank you for allowing me an opportunity to answer your interesting question.
Other than the potential trauma that sharp, jagged eggshells might
pose to the digestive tract, they otherwise pose no toxic threat. As
seen in this brief discussion, some people with the eating disorder
Pica compulsively consume odd forms of non-nutritional substances and
occasionally this includes eggshells. It certainly isn?t wise to eat
eggs shells but the fact remains that they are not poisonous:
?Pica. I keep eating eggshells. Why??
Eggs shells are porous. Some time ago people believed that if an egg
was bad boiling it with other edibles would ruin the entire pot. While
this might be true of the egg were to burst and contaminate the pot
with salmonella or the like, the high temperature of the water would
probably be enough to keep an intact egg sterile.
On the other hand, since eggs shells are porous, it would not be
impossible to taint the eggs with something else thrown into the pot.
Not just from a bacterial standpoint but also from a flavor standpoint
Finally, eggs (especially the homegrown variety, since cleaning
methods are less stringent that industrial methods) are inherently
nasty. The surface of the eggs can retain feces, residue from flies
and other insects, and host of other barnyard filth in the pores of
the shell ? even though they are washed or inspected. Boiling eggs
with other edibles is a thoroughly distasteful prospect (no pun
intended) even though it probably would not harm you due to the
sterilization of the boiling water. The common sense logic that a
rolling boil would dislodge disgusting particles into the mix is
probably an unpalatable concept to most people.
Nope ? chicken eggs shells are not poisonous ? but they are sometimes
VERY gross. That?s why Mother knows best.
I hope you find that my research exceeds your expectations. If you
have any questions about my research please post a clarification
request prior to rating the answer. Otherwise, I welcome your rating
and your final comments and I look forward to working with you again
in the near future. Thank you for bringing your question to us.
Tutuzdad ? Google Answers Researcher
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