Eggshells are one of those kitchen wastes that we usually throw away without even thinking about it.
However, many people do not know that these “leftovers” are actually a valuable source of nutrients, both for human and plant health.
Reusing it not only reduces the amount of waste, but also offers a natural and economical way to get real benefit from it.
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Health Benefits
Eggshells contain approximately 90% calcium carbonate, a mineral essential for strong bones and teeth. After proper disinfection and grinding, they can be consumed in small quantities as a natural 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 extra calcium. Some studies show that the calcium in eggshells is as well absorbed as that in dietary supplements, making it a natural way to prevent osteoporosis and strengthen bones.
In addition to calcium, the shells also contain traces of magnesium, phosphorus and zinc, minerals that also contribute to the proper functioning of the body.
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To help the garden
Eggshells are also widely used in gardening. One of their most common uses is as a natural fertilizer. When crushed and mixed with soil, they enrich it with calcium and help balance the pH. This is especially useful for crops like tomatoes, peppers, and eggplants that need more calcium.
Larger pieces of shell can be placed around plants to form a natural barrier against snails and slugs. Their sharp edges repel these pests without the need for pesticides.
Another option is to add the shells to the compost: they accelerate decomposition and enrich the compost with minerals.
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For a more sustainable daily life
Reusing eggshells is an easy step toward a greener, more sustainable lifestyle. Whether you use them to strengthen your bones or nourish your plants, you’re reusing a resource that would otherwise be wasted.
So the next time you crack an egg, remember: don’t throw away the shell so quickly, give it a second life!
