Our expert says:
My guess is that the pains are not from hunger but because the acid in his tummy is burning his lower esophagus. Try giving him something like gaviscon after meals and maybe he should consider having the hernia fixed surgically if it really bothers him. The reason he eats is because the food neutralizes the stomach acid and it isn't the volume but the presence of the food that makes the pain better. You can also try and let him use something like Ulsanic/Zantac 75 tablets to lower the acid content of the stomach. Has he had a gastroscopy to diagnose the Hiatus hernia? This could easily develop into a stomach ulcer and should be checked by a doctor.
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