Persistent phlegm is a symptom, not a disease—it signals an underlying issue.
The four most common causes are gastroesophageal reflux (GERD), chronic sinusitis, food allergies or intolerances, and postnasal drip.
GERD can cause phlegm even without noticeable heartburn.
Chronic sinusitis leads to excess mucus that drains into the throat.
Food sensitivities may trigger inflammation and mucus production.
Natural remedies—like hydration, herbal support (thyme, ginger), and environmental adjustments—can significantly help.
Key Takeaways
