NZ Māori in the South Island, who relied more on aruhe[1] - the rhizome of the bracken fern - than the North Island population, also showed higher rates of dent

NZ Māori in the South Island, who relied more on aruhe[1] - the rhizome of the bracken fern - than the North Island population, also showed higher rates of dental wear from the fibrous rhizome. Ditto populations with a diet rich in shellfish - they often contain remnants of sand. (The N.I. Māori could grow kumara (sweet potato), but the growing area of kumara in South Island was limited to the east coast from Banks Peninsula northwards). [1]: https://teara.govt.nz/en/photograph/20258/aruhe https://teara.govt.nz/en/photograph/20258/aruhe