Acid reflux and food intolerance are synonymous because of the weakened state of the stomach acid necessary for each condition. Some people are surprised to find out that acid reflux is caused by low stomach acid, not the overabundance of acid. Our stomach acid is the first line of defense for our immune systems. It should be strong enough to kill parasites and pathogens on contact. When a person has hypochlorhydria (low stomach acid) the food that is intended to be digested begins to rot instead of breaking down and moving on to the next phase of digestion. Gases are formed and digestion, which is supposed to be a north to south process, takes a wrong turn. An added detriment is that if the low acid has allowed the excess of yeast to colonize, the gateway from the esophagus to the stomach could be paralyzed open allowing the weakened stomach acid to gurgle up the throat. Even low stomach acid will burn the esophagus, which has the PH between 4 and 6. Unfortunately, many people are prescribed acid blockers for acid reflux when what is actually needed is, in fact, more acid.