There are several reasons why a person might start to feel more phlegm than usual. In many cases, it’s the body’s defense mechanism against everyday stimuli such as the following:
– Changes in temperature or weather, especially cold or very dry environments
– Seasonal allergies, which stimulate mucus production
– Colds or mild respiratory infections, even after recovery
– Exposure to dust, smoke, or pollution
– Occasional acid reflux, which can irritate the throat
– Dehydration, which thickens natural secretions