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Cercetători din cadrul Universităţilor Yale şi Maryland au descoperit că actul căscatului deschide sinusurile situate la stânga şi dreapta nasului, situaţie ce duce la scăderea temperaturii creierului.
Cu toate acestea, căscatul excesiv poate fi un simptom al unei boli a sistemului nervos.
La fel, pe baza simptomatologiei, căscatul excesiv poate preceda afecţiuni precum migrenele cronice sau crizele de epilepsie.
Autorii studiului mai declară că mucusul din sinusuri se evaporează constant, şi, precum un frigider, răcoreşte vasele de sânge din creieri şi fluidul cerebrospinal.
Sursa: The Scientist
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