Assertion: oxygen | /r/HasProperty | dangerous to a normal person's health
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Source sentences:
text: The American Lung Association has stated "there is no evidence that oxygen at the low flow levels used in bars can be dangerous to a normal person's health", but the U.S. Center for Drug Evaluation and Research cautions that people with heart or lung disease need their supplementary oxygen carefully regulated and should not use oxygen bars.
text: The American Lung Association says that inhaling oxygen at oxygen bars is unlikely to have a beneficial physiological effect, but adds "there is no evidence that oxygen at the low flow levels used in bars can be dangerous to a normal person's health.