"A symptom is not a cause."
I ran across this 3-part article this morning.
Doctors generally treat Acid Reflux and GERD with acid-lowering medications like Prilosec.
The trouble is, it's not the acid level of the stomach that causes the problem, it's the inability of the valve to stay closed and CONTAIN the acid in the stomach. When the valve malfunctions the acid washes back up to the esophagus, which does not have the protective coating that the stomach does, and heartburn/reflux is the result. Here's a really telling fact to ponder:
"...when stomach acid is measured in people suffering from heartburn and GERD it is almost always low, not high."
So apparently low stomach acid levels result in 2 problems:
....it encourages bacterial overgrowth, which results in inflammation
....it causes maldigestion of carbohydrates, which results in gas production
"The resulting gas increases intra-abdominal pressure, which is the driving force behind acid reflux and GERD."
There's a lot more information here (haven't even had time to finish Part 3 yet myself) but one big takeaway, I think, is this:
"... if gas produced by microbial fermentation of carbohydrates causes acid reflux, we might expect that reflux could be treated by either 1) reducing bacterial overgrowth or 2) reducing carbohydrate intake."
Which helps to explain why most of us who switch to low carb experience an almost immediate improvement in heartburn and related stomach ailments.