[jnellis]

If you are overweight or have belly fat then it may be that your esophageal sphincter is fine and its your sleeping position that is causing the issue. Sleeping on your stomach causes belly fat to push into the area of your sphincter and opens it up slightly, now acids can flow past this point. The rise of esophageal cancer in the 90's up to now corresponds with the rise of obesity. I was actually allergic to NSAIDs which were causing gastritis but this mechanical component of sleeping on stomach (and being fatter at the time) was one of the issues that made it worse. After losing some weight it went away and after figuring out NSAIDs were causing the initial problem, I've been reflux free for four years now. Spent twenty years battling this problem and thought most of it was due to hereditary reason because my father had the same issues and died from esophageal cancer.

[unsupp0rted]

These are good points and hopefully useful to other HNers.

I'm not overweight by more than a kilo or two, and I sleep on my back or side, so this doesn't match my case as much.