What Phlegm Color Reveals About Your Respiratory Health

Dec 26th 2025 10:33pm EST

STORY AT-A-GLANCE Phlegm color shifts give you immediate clues about what’s happening in your airways, helping you judge whether irritation, inflammation or infection is building before symptoms intensify Yellow and green tones reflect immune activity, while pink, red, brown, or black phlegm signal bleeding, long-standing lung issues or fungal infection, giving you clear markers for […]

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