Does it help?
Eggshells are indeed a rich source of calcium.
Calcium is important for maintaining healthy bones and teeth.
Some small studies have suggested that eggshell calcium may be absorbed by the body and could support bone health.
Important considerations
Joint pain is not always caused by low calcium. Conditions such as Osteoarthritis, Rheumatoid Arthritis, injuries, inflammation, or other medical issues may be involved.
Consuming too much calcium can cause health problems, including kidney stones.
Eggshell powder must be ground very finely to avoid sharp particles.
Commercial calcium supplements are generally more standardized and tested for purity.
Bottom line
Boiled and powdered eggshells can provide calcium, but there is no strong evidence that they directly cure knee pain or joint problems. If someone has persistent joint pain, it’s better to identify the underlying cause rather than relying solely on eggshell remedies.
