The color of your phlegm may be more than simply ... can develop into secondary bacterial infections, turning white phlegm yellow. Prompt treatment is essential to avoid this progression.

Yellow mucus indicates your immune system is actively fighting off an infection. White blood cells sent to attack the infection die and release enzymes that give mucus its yellowish color.

After they’ve done their job and die, they’re flushed out of your body with your mucus, and in the process can dye it yellow. Yellow mucus doesn’t mean that you need antibiotics, but it ...

Yellow mucus indicates your immune system is actively fighting off an infection. White blood cells sent to attack the infection die and release enzymes that give mucus its yellowish colour.

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 the yellow or green snot, yellow in particular is ...

Ever wondered why the colour of your snot is different when you’re sick? You’re probably not the first person to ask this question. There are actually many reasons why your snot’s changes colour when ...

Mercola, you should seek medical attention: If your symptoms persist for more than 10 days If you experience difficulty breathing, develop a severe cough, notice thick green or yellow mucus ...