phlegm is a thick type of mucus produced by the respiratory system—especially the throat, bronchi, and lungs—when the body is irritated or fighting infection.
🫁 Why phlegm is produced
The body makes phlegm to:
- Trap dust, smoke, and germs
- Protect and clean the airways
- Help remove infections like bacteria or viruses
🔍 Common causes
Phlegm can increase due to:
- Colds and flu
- bronchitis
- Allergies
- Smoking or air pollution
- Sinus infections
🧠 What phlegm can look like
- Clear → often allergies or mild irritation
- White → mild infection or congestion
- Yellow/green → infection (immune response)
- Brown or blood-streaked → may need medical attention
🌿 Simple ways to reduce it
- Drink warm fluids (water, tea, soup)
- Steam inhalation
- Avoid smoke and dust
- Use humid air if dryness is an issue
- Rest to help recovery
⚠️ When to see a doctor
- Persistent cough > 2–3 weeks
- Blood in phlegm
- High fever or chest pain
- Difficulty breathing
🧠 Simple idea
Phlegm is basically the body’s protective cleaning system for the lungs, increasing when there is irritation or infection.
