What does phlegm color mean?

It can indicate infections, allergies, or serious conditions.

What is Phlegm?

Lung mucus, also called sputum.

Color Meanings:

● Clear: Normal
● White: Infection/allergy
● Yellow/Green: Infection
● Brown/Black: Old blood/lung disease
● Pink/Red: Heart/lung issues

Why Check?

Phlegm color can signal health problems—get tested if unsure.