For a very long time, Dr's thought that stress causes ulcers. Now they know that's not really the case and it's a bacteria HPylori that causes most cases of ulcers. I really think it's the same with GERD, although once you have GERD you have stress and then produce more acid. I read online about a Strepptococus Mutans that causes cavities and it's not sugar as previously thought. I wonder if the SM bacteria could actually be the cause of GERD or perhaps some other bacteria that researchers haven't discovered yet.
Gerd is big business for Pharma, do you think anyone is really doing any research to find out the cause and cure for it? The pills we take now reduce the acid, but it doesn't treat the cause.