The link between reflux and bad bile function and digestion

Problems due to bad digestion

• Contaminated small bowel syndrome (SIBO): The gases produced by the bacteria in the small intestine increase the internal pressure in the stomach, which opens the oesophageal sphincter and forces the acidic contents of the stomach into the oesophagus.
• Dysbiosis and IBS: The bloating typical of these diseases increases the abdominal pressure, which forces the acidic contents of the stomach into the oesophagus.
• Missing bile quantity (post-biliary surgery or gallstones): If there is a problem with the breakdown of fats or if the bile's disinfectant role does not work properly, SIBO or dysbiosis can develop.

Other reasons

'If the closing ring between the oesophagus and the stomach - also known as the cardia - opens beyond swallowing or burping, it allows acidic contents to enter the oesophagus. This can be influenced by many things: overeating after excessive stomach distension, burping, activities and conditions that compress the abdomen (bending, lifting, abdominal exercises, obesity), but it can also be reduced by many foods that people know as causing 'heartburn'. These include onions, fatty foods, peppermint, citrus fruits, chocolate, sweets, alcohol, tea, coffee, tomato-based foods. Smoking and certain medicines also relax the cardia.' Source: Gábor Szendi -  Heartburn and acid reflux