Why don't you use nano-hydroxyapatite?Updated 2 years ago

Micro-hydroxyapatite is the smallest natural particle size available. Nanoparticles are smaller than microparticles, but nano-hydroxyapatite is synthetic, and we're committed to only using natural ingredients. There's also speculation that nano-hydroxyapatite - which is confirmed as able to pass through the cell wall - may damage DNA and contribute to the spread of cancer. The research on these concerns is still limited, but we aren’t willing to take those risks with our families’ health or yours.