No, Face Masks Don't Lower Oxygen Levels

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Claims that masks reduce oxygen supplies, cause carbon dioxide "intoxication" and weaken the immune system have gained steam, fueled in part by social media.

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from WebMD Healthhttps://img.webmd.com/dtmcms/live/webmd/consumer_assets/site_images/article_thumbnails/news/2020/03_2020/covid19/1800x1200_covid19_5.jpg https://ift.tt/3oV8XLO

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