Egg Shells although not very tasty and they can be hard to chew are actually edible and can provide you with needed calcium to help keep your bones strong and healthy.
One egg shell provides 2 grams of calcium which is beneficial for your health if you eat them.
Egg Shells when eaten can also reduce the pain of osteoporosis but I tried eating egg shells before and couldn't chew them or eat them but if you can then you'll have better health.