Lindsay Curtis is a health & medical writer in South Florida. She worked as a communications professional for health nonprofits and the University of Toronto’s Faculty of Medicine and Faculty of ...

How’s your blood and bile? Are you melancholic or phlegmatic? In early medicine, those questions were keys to the bodily humors — four substances linking physical illness to emotional states and ...

Add Yahoo as a preferred source to see more of our stories on Google. Even if it is kind of gross when you're full of it and wrestling with it, phlegm actually serves a useful purpose: The thick, ...