India, Nov. 2 -- Dr Saurabh Bansal, general, minimal access, and gastrointestinal surgeon, director and founder of THE CLINICS, said in an informational article published on Oct. 30, 2026, that waking up with a sour taste in the mouth can be due to night-time acid reflux, and advised paying attention to the symptom if it happens regularly.
Cause identified by specialist
The article said acid reflux happens when stomach contents flow backwards into the oesophagus, the tube that transports food from the mouth to the stomach.
It said the gastroenterologist believed night-time reflux can be linked to eating dinner close to bedtime and lying down soon afterwards. Dr Bansal said, “When we are upright, gravity helps keep stomach contents down. ...