Acid reflux occurs when stomach acid leaks back into the oesophagus, or gullet.

Acid reflux is when stomach acid travels into the gullet and throat.

So the body has no time to prepare for the influx of food with the production of stomach acid and digestive enzymes.

Many M. E. people have digestive problems due to a lack of digestive enzymes and stomach acid.

An acclaimed opera singer says his career is back on track after having an implant fitted to stop stomach acid from burning his vocal cords.