
Gastro-oesophageal reflux, which happens when stomach acid flows back into the oesophagus, is a physiological phenomenon, if it happens sporadically in limited quantity, after a meal for example.
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Gastro-oesophageal reflux, which happens when stomach acid flows back into the oesophagus, is a physiological phenomenon, if it happens sporadically in limited quantity, after a meal for example.