Is zirconium found in any medical or nutritional applications or hazards?

The toxicity of zirconium is not very important; only the inhalation of zirconium and zirconium compounds powders is dangerous (as for many other materials) - leading to pneumoconiOSes. Also zirconium can be pyrophoric at high temperatures, in powdr form. Zirconium is used for surgical implants, stomatology - as zirconium dioxide, im some cosmetics. No nutitional use.