I don't know if there is a correlation but I do know that when I first started getting acid reflux the IBS symptoms came into play about 10 months later and then both just snowballed from there. I didn't know I had reflux until they put me on meds almost a year after the first symptoms occurred, that cured the 24/7 unbearable nausea I had. Finding my trigger foods and a lifestyle change has helped me live with the IBS thus far.