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When the LES fails to close as it should, digestive enzymes and food fragments can travel back upward, leading to discomfort and swallowing difficulties
However, the majority of validated GERD questionnaires use symptom-based questions similar to those in this study 35 and guidelines by the American College of Gastroenterology 36 support the clinical use of subjective symptoms and response to antacid therapy as a method of GERD diagnosis
Key takeaways If a person does not get enough vitamin B12, a doctor may suggest supplements containing more than the daily recommended dose
Fish, meat, poultry, eggs, milk, and other dairy products, which also contain vitamin B12
Understanding what these claims mean helps assess product reliability