Using eggshells for knee pain and joint health is one of those ideas that has some scientific basis, but it’s often overstated online.
Eggshell
🧠 Why people use eggshells
Eggshells are mostly made of calcium carbonate, along with small amounts of other minerals and collagen-related compounds.
Calcium carbonate
Because of this, they’re sometimes promoted for:
- strengthening bones
- supporting joints
- reducing pain (especially in arthritis)
🔬 What research actually suggests
There is some evidence around eggshell membrane (the thin layer inside the shell):
- May help reduce joint pain and stiffness
- Sometimes used in supplements for osteoarthritis
- Effects are modest, not a cure
But:
- Whole crushed eggshells ≠ the same as purified supplements
- Results are inconsistent and not guaranteed
⚠️ Risks of using eggshells directly
Eating homemade eggshell powder can be risky if not done properly:
- Bacteria risk (like Salmonella if not sterilized)
- Sharp particles if not finely ground
- Too much calcium → may cause kidney or digestive issues
✅ If someone still wants to use it (safer approach)
- Wash shells thoroughly
- Boil to sterilize
- Dry and grind into very fine powder
- Use very small amounts only
Even then, it’s better to use regulated supplements instead of DIY versions.
🦵 Better-supported ways to help knee/joint pain
- Regular gentle exercise (walking, stretching)
- Maintaining a healthy weight
- Anti-inflammatory foods (fish, nuts, vegetables)
- Medical treatments if needed
🧠 Bottom line
- Eggshells contain useful minerals
- Eggshell membrane has some evidence for joint support
- But DIY eggshell remedies are not a proven or ideal treatment
- Safety and dosage are real concerns
If you want, I can suggest safe, proven supplements or exercises specifically for knee pain based on your age and symptoms.
