Hey, maybe those ancient people who invented yoga were on to some...

Hey, maybe those ancient people who invented yoga were on to something when they say to do "your o-o-h-h-m-m-s-s-." So hum those ohms every day and increase our resistance against nasal infection. American Journal of Respiratory and Critical Care Medicine Vol 166. pp. 144-145, (2002) © 2002 American Thoracic Society -------------------------------------------------------------------------------- Brief Communication Humming Greatly Increases Nasal Nitric Oxide Eddie Weitzberg and Jon O. N. Lundberg Department of Anesthesiology and Intensive Care, Karolinska Hospital, and Department of Physiology and Pharmacology, Karolinska Institutet, Stockholm, Sweden Correspondence and requests for reprints should be addressed to Dr. E. Weitzberg, Department of Anesthesiology and Intensive Care, Karolinska Hospital, S-171 76 Stockholm, Sweden. E-mail: ****** The paranasal sinuses are major producers of nitric oxide (NO). We hypothesized that oscillating airflow produced by humming would enhance sinus ventilation and thereby increase nasal NO levels. Ten healthy subjects took part in the study. Nasal NO was measured with a chemiluminescence technique during humming and quiet single-breath exhalations at a fixed flow rate. NO increased 15-fold during humming compared with quiet exhalation. In a two-compartment model of the nose and sinus, oscillating airflow caused a dramatic increase in gas exchange between the cavities. Obstruction of the sinus ostium is a central event in the pathogenesis of sinusitis. Nasal NO measurements during humming may be a useful noninvasive test of sinus NO production and ostial patency. In addition, any therapeutic effects of the improved sinus ventilation caused by humming should be investigated. Key Words: exhaled • sinus • sinusitis