Persons with normal function of the nose have improved cognitive function and energy levels in comparison to persons with chronic nasal issues. In a study of 100 persons to investigate cognitive function (50 with chronic rhinosinusitis) persons with nasal congestion were found to have significantly more cognitive dysfunction and fatigue on validated instruments and had worse reaction times on computerized testing.
Soler ZM, Eckert MA, Storck K, Schlosser RJ (2015) Cognitive function in chronic rhinosinusitis: a controlled clinical study. Int Forum Allergy Rhinol. 5(11):1010–1017
