Spit or swallow? What’s the best way to deal with phlegm?

In 1821, French physician René Laennec wrote, “A spitting pot I consider as an essential part of the bedroom apparatus.” Laennec, who invented the stethoscope, spent his days gazing at his patients’ phlegm. In the days before X-rays and blood tests, phlegm was considered a valuable diagnostic tool.

This article was originally published on MedicalXpress.com

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