Eating Boiled and Ground Eggshells: Why It’s Not a Safe Calcium Source
You might have come across a popular tip online: keep your eggshells, boil them, grind them into a powder, and add it to your meals or smoothies as a natural calcium supplement. It sounds resourceful—after all, eggshells are largely made of calcium carbonate, the same compound found in many store-bought supplements. However, there’s an important …










