Chronic Dehydration: A More Common Cause Than You Think
One of the most common causes of dry mouth is chronic dehydration. Many people expect to feel intensely thirsty in order to drink water, not knowing that thirst is a delayed sign. The body can spend hours or even days with a fluid deficit before manifesting it in an obvious way.
In addition, not all liquids hydrate in the same way. Excessive consumption of coffee, alcohol, energy drinks or soft drinks can increase water loss, as they have a diuretic effect or contain high amounts of sugar and caffeine. This worsens dry mouth if it is not compensated with enough pure water.
Dry mouth and high blood sugar: a sign that should not be ignored
A silent, but very important, cause of persistent dry mouth is elevated blood sugar levels. When glucose is high, the body tries to eliminate that excess through urine, dragging large amounts of water.
This causes constant internal dehydration, accompanied by intense thirst and dry mouth that does not improve even if water is drunk. In many people, this is one of the first symptoms of prediabetes or diabetes, even before other, more familiar signs appear.
