Learn why phlegm happens and discover gentler, everyday ways to remove it without resorting to loud “uncle coughs”.

If symptoms like persistent cough, congestion ... can develop into secondary bacterial infections, turning white phlegm yellow. Prompt treatment is essential to avoid this progression.

Producing mucus will help clear your sinuses ... A lot of people think yellow or green snot means you need an antibiotic. That is not true. Laura Martin, MD, MPH If it's a viral infection causing ...