Acid reflux is the most Googled digestive complaint globally. It happens when stomach acid flows back into the oesophagus, causing heartburn, a burning sensation in the chest, or a sour taste. Frequent acid reflux is diagnosed as GERD. An imbalanced gut microbiome can worsen symptoms by disrupting the lower oesophageal sphincter and increasing gut inflammation. Probiotic interventions are increasingly studied as a complementary approach to managing GERD.
