Doctors and nutritionists are looking closely at a common item most of us throw away: eggshells. While they won’t cure diseases, when prepared properly, they can be transformed into a simple, natural supplement rich in minerals.
Let’s separate the science from the hype and see if this kitchen scrap deserves a place in your wellness routine.
What Are Eggshells Made Of?
Eggshells are a remarkable biological structure, composed of about 95% calcium carbonate—the same form of calcium found in many antacids and supplements. The remaining 5% includes valuable minerals like magnesium, phosphorus, and trace amounts of strontium and fluoride, all of which play a role in bone and dental health.
The inner membrane is rich in collagen and proteins like keratin. This composition is why researchers are interested in eggshells as a potential, low-cost source of bioavailable nutrients.
Potential Health Benefits (Based on Research)
When processed into a fine powder, eggshells may offer several supportive benefits:Fine powder grinder
Bone Health Support: Studies, including one in the International Journal of Food Sciences and Nutrition, suggest the calcium from powdered eggshells is well-absorbed by the human body. It can serve as a dietary supplement to help maintain bone density, which is crucial for preventing osteoporosis, especially in postmenopausal women.
Joint Comfort: Some clinical trials have investigated eggshell membrane (ESM) supplements (the thin film inside the shell). Research indicates ESM may reduce pain and stiffness in joints, likely due to its collagen, glucosamine, and chondroitin content. This is different from the calcium-rich shell powder itself.
Dental Aid: The calcium carbonate in finely ground eggshell powder has an abrasive quality that can help remove plaque. More importantly, the minerals may support tooth remineralization. Some natural toothpaste recipes incorporate it for this potential benefit.Calcium supplements
Sustainable Calcium Source: For individuals with dietary restrictions, lactose intolerance, or limited access to diverse foods, properly prepared eggshell powder can be an extremely affordable and sustainable calcium source.
continued on next page
