The Bottom Line

Eggshells are not only one of the cheapest sources of calcium — they also appear to be among the most effective.

If you have a hard time meeting your calcium requirements or if you suffer from osteoporosis, homemade eggshell powder is an effective and inexpensive alternative to commercial supplements.

In fact, studies show that eggshell calcium is well absorbed and may strengthen the bones of people with osteoporosis.

Preparing eggshell powder at home is easy. After boiling and drying the shells, you can crush them with a pestle and mortar and mix the powder with water or add it to food.