Why does my mouth taste sweet despite having normal blood sugar levels?

Dec 17, 2021 Source: Cainiu Health
Disease description:

Every morning upon waking, I feel a sweet taste in my mouth, yet my blood glucose levels have been tested and found to be normal. Why do I experience this sweet taste despite having normal blood sugar?

Doctor's answer (2)
Dr. Zhang Nan
It is also possible that you have recently consumed excessive amounts of sweets. Poor oral hygiene can sometimes cause a sweet taste in the mouth. In your case, we recommend maintaining good oral hygiene—brush your teeth twice daily (morning and night) and rinse your mouth after meals. Additionally, adopt a light diet recently and consume more easily digestible foods. A sweet taste in the mouth does not necessarily indicate high blood sugar levels; this claim lacks scientific evidence.