What causes a bitter taste in the mouth upon waking up in the morning?
Disease description:
For the past few days, upon waking up every morning, I have been experiencing a bitter taste in my mouth and significant dryness. I'm not sure what to do about it. What could be causing this?
Doctor's answer (1)
Dr. Shen Yonghua
Waking up in the morning with a bitter taste in the mouth may be caused by dry mouth, improper diet, indigestion, gastroesophageal reflux, and other factors.
Morning bitterness upon waking can be caused by various factors. Dry mouth is a common cause; during sleep at night, saliva secretion decreases, leading to bacterial growth in the mouth, which can produce odors and bitterness. Eating large amounts of food at night may also promote bacterial growth in the mouth, resulting in a bitter taste upon waking. It is recommended to reduce food intake in the evening and maintain good oral hygiene habits.
Unhealthy dietary habits, such as excessive alcohol consumption and overconsumption of spicy foods, along with high mental stress and poor sleep quality, may indirectly affect digestive function, leading to a bitter taste upon waking. Long-term intake of spicy, raw, cold, or greasy irritating foods may weaken digestive function, which can in turn cause a bitter taste. It is recommended to adjust dietary habits and, if necessary, take digestive medications.
Nighttime acid reflux in patients with gastroesophageal reflux disease (GERD) may flow back into the mouth, causing a bitter taste. Patients with GERD are advised to seek timely medical attention and undergo appropriate treatment. If any physical discomfort occurs, it is recommended to visit a hospital promptly and follow medical advice for management.
