Why do I wake up every day with a dry mouth and throat?

Waking up with a dry mouth and throat every day may be caused by multiple factors. Breathing through the mouth during sleep can lead to evaporation of moisture in the oral cavity, especially if you breathe through your mouth while sleeping. A dry environment or the use of heating systems may also reduce indoor humidity, leading to dryness of the mouth and throat. Unhealthy lifestyle habits, such as insufficient hydration before bedtime or consuming overly salty or spicy foods, may also worsen this symptom. If this condition persists, it could also be related to certain underlying health issues, such as diabetes, Sjögren's syndrome, or thyroid problems. It is recommended to maintain good lifestyle habits, such as increasing fluid intake and improving indoor humidity, and to consult a doctor when necessary to determine if there are other underlying causes.