Can acid reflux be a sign of something serious?

Related questions

1. What is the best way to get rid of acid reflux?
2. Does acid reflux go away?
3. Can acid reflux go away?
4. Will heartburn go away on its own?
5. Does apple cider vinegar help heartburn?
6. Why do I have acid reflux all of a sudden?
7. Is Acid reflux is dangerous?
8. Is esophageal cancer curable if caught early?
9. How long does it take for acid reflux to go away?
10. Can acid reflux last for days?

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18. #number
19. #esophagus