A higher-than-normal amount of phlegm can build up in your nose, throat, and lungs when you are sick. This build-up may cause coughing and discomfort. Bloody, brown, white, yellow, or green phlegm ...

Discover the similarities between Covid, flu, and the common cold, and learn how to diagnose each one accurately with testing ...

According to new real-world research that my colleagues at Puressentiel commissioned, one third of us feel the symptoms for a ...