I wrote about this in the past. I did have the LINX procedure, it does have it's problems but does keep the acid down. The problem is if you eat foods that cause gas the gas puts pressure on the device and can be painful. If you have a compromised LES nothing will stop the acid from going up your esophagus and into your sinuses. The cough used to make me vomit!. I found out after the fact that I was fructose intolerant and that any fruit would produce gases, the gases push the acid up. The LINX now stops it from passing the LES but like I said can cause discomfort but not nearly as bad as the burping, bleching ,coughing,ect without it. All these acid reflux diets promote fruit and I love it but try going fruit and fructose free for a few days. It also lowered my blood sugar! I was tested for this at MAYO and it was negative but found out these tests are not reliable. It often takes a day for the fruit to cause problems due to the fact if you don't have the enzyme to break it down it ferments and causes the gas. My gas was so bad I was undateable! Now that is under control also. You can google fructose intolerance or go to pubmed.com