Oxygen, a gas found in the air we breathe, is necessary for human life. Some people with breathing disorders can’t get enough oxygen naturally. They may need supplemental oxygen, or oxygen therapy. People who receive oxygen therapy often see improved energy levels and sleep, and better quality of life..

Reference :Written by Heaven Stubblefield and Ana Gotter,Medically reviewed by Deborah Weatherspoon, PhD, RN, CRNA, COI, https://www.healthline.com/health/oxygen-therapy , july 5th,2019

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