Tag: Oyster shell powder

Oyster shells are an abundant and sustainable byproduct of the seafood industry, composed of up to 95% calcium carbonate. Instead of discarding them, you can repurpose this waste to extract a valuable, natural calcium source for your garden, animal feed, or other applications using straightforward methods at home.

Eggshells are an exceptionally concentrated and free source of calcium, with approximately one medium-sized shell containing a significant amount of this essential mineral. While eggshells are the most readily available option for many, several other shells are high in calcium and have been utilized for centuries as a mineral source.

While the shells themselves are not edible, supplements made from ground-up shells, such as oyster shell calcium, are a well-established source of bioavailable calcium. However, attempting to consume raw or unprocessed sea shell for health benefits is dangerous due to contamination and physical risks. This practice is strongly discouraged, as the body cannot properly digest the hard, abrasive material.