A. MEISTER / CUSTOM MEDICAL STOCK PHOTO / SCIENCE PHOTO LIBRARY A. MEISTER / CUSTOM MEDICAL STOCK PHOTO / SCIENCE PHOTO LIBRARY
Friends using portable oxygen canister. Teenage girl wearing an oxygen mask and inhaling oxygen from a portable canister, whilst socialising with a friend. Oxygen is used medicinally to treat patients with hypoxia, or insufficient oxygen in their body tissues, often as a result of lung and breathing disorders. Some people also believe it to be an effective remedy for headaches and stress. Because of its relaxing yet invigorating effects, it has also gained popularity as a recreational drug.
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