I don't mean to disagree with you MrsD but...some people simply have reactions to things and it doesn't indicate something is wrong.
My acid reflux is not severe, never even been on rx meds and I have had it checked. I simply have reactions to some things while other people do not.
Of course you are right, there can always be underlying issues. I am just saying there does not have to be. Sometimes it really is as simple as a product that causes acid reflux in some people and not in others.