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Swedish researchers have found
that humming can help maintain healthy nasal passages and avoid sinus
infections. Humming increases the amount of air exhaled from the nose
versus other common exhalations, which could lower the risk of sinus infections
if done routinely.
The researchers measured hummers'
exhalation levels by tracking nitric oxide (NO), a gas produced in the
lungs and nasal passages to help blood vessels dilate. Humming increased
the NO released into the nose from the sinuses.
Humming also facilitated the
exchange of air from sinuses into nasal passages, which essentially ventilates
the sinuses and protects them from infection. In addition to its ability
to elevate the mind and heart, it seems that humming has even more to
hum about.
American
Journal of Respiratory and Critical Care Medicine 2002;166:144-145
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