It may be that the salt water has a simple mechanical effect of clearing mucus, or it could be that trace elements in the water play some more significant role, though the exact reason why such a solution works is not known, said Dr. Ivo Slapak and colleagues at the Teaching Hospital of Brno in the Czech Republic.Link (Via TDG)
The study, published in the January issue of the Archives of Otolaryngology, was paid for by Goemar Laboratoires La Madeleine, Saint-Malo, France, which makes Physiomer, the seawater nasal spray used in the investigation.
Mark Frauenfelder is the founder of Boing Boing and the editor-in-chief of MAKE and Cool Tools. Twitter: @frauenfelder. His new book is Maker Dad: Lunch Box Guitars, Antigravity Jars, and 22 Other Incredibly Cool Father-Daughter DIY Projects