Our expert says:
Your father will have to consult a doctor for an examination and a gastroscopy, as well as a possilble barium meal. It is important to determine if there is a physical small obstruction that is the cause for his dyspepsia. His symptoms can worsen dramatically and an answer will therefore have to be find as soon as possible.
Please refer to the following link for detailed information about blood sugar levels: http://en.wikipedia.org/wiki/Blood_sugar_levels
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