Editor's note: Find the latest COVID-19 news and guidance in Medscape's Coronavirus Resource Center. Wearing a mask to protect against transmission of COVID-19 does not decrease oxygen saturation, ...

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Social media users have been sharing content online that claims wearing a face mask causes cancer due to oxygen deficiency. This claim is false. Examples can be seen here; and here. One post reads: ...

A video being shared online has falsely said face coverings do nothing to stop the spread of the novel coronavirus and will instead deprive the brain of oxygen, causing damage to adults and ...