EPD is right on> acid reflux can be caused by a number of food/drink items. Top of the list are tomatoes, beer, rice, pasta, wine, some types of soft cheese (better hope your not an Italian!). Coffee also has its place in here. I eat or drink in abundance all of the above and until very recently have had no problems. However after a month in Singapore, where my diet changed somewhat (too much beer...not enough coffee, cheese, pasta etc :wink: ) did I start experiencing acid-reflux for the first time. I must say it is a horrible experince which is only now slowly coming right now that I am back in good ole Indonesia.
You know, I think we can look at surveys until we are blue in the face and get no where with conclusions. Many of the surveys that point to the positives in coffee are industry sponsored...conversely those with the opposing view are often sponsored by vested interest groups as well. I think, like anything, coffee (wine, beer, scotch) in moderation should not cause indegestion (acid-reflux). In excess, well I guess then it depends somewhat on the individuals tolerance levels for the items digested.
BTW a recent survey of Civet cats (Luwak) found only 1 in 23 showed signs of acid reflux