My son has always had reflux (really severe even in infancy), and in the past few months it’s gotten worse with a vengeance ( he’s 34). He’s discovered he can’t do red meat, particularly hamburger. And dairy is not his friend either. We’ve gone to vegan “meats”, turkey, pork, which are definitely easier on his digestive system. He’s going in for an appointment with the gastroenterologist soon to see if IBS is the problem. But eating healthier, avoiding rich, greasy food, and eating in smaller portions has helped.