Eggshells contain about 90% calcium carbonate, a mineral essential for strong bones and teeth. After proper disinfection and grinding, they can be consumed in small amounts as a natural dietary supplement. To do this, the shells are boiled for about 5 minutes, dried in the sun or oven, and then ground into a fine powder.
The resulting powder can be added to juices, smoothies, or soups to provide the body with additional calcium. Some studies show that the calcium in eggshells is as well absorbed as that in supplements, making it a natural way to prevent osteoporosis and strengthen bones.
To help the garden
Eggshells are also commonly used in gardening. One of their most common uses is as a natural fertilizer. Crushed and mixed with soil, they enrich it with calcium and help balance the pH. This is especially beneficial for plants like tomatoes, peppers, and eggplants, which require more calcium.
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