In the past, high dose fluoride was used to make the bones more dense, but the structure was not normal and some people had more broken bones.
Mandulo, kwakusetyenziswa ithamo eliphezulu lefluoride ukuqinisa amathambo kodwa kwakungaqhelekanga ukwakheka kwawo yaye abanye abantu bophukelwa nangakumbi ngamathambo.