Yes salty foods and carbonated drinks can cause bloating. Certain other food combinations can take longer to digest and lead to bloating. So you might just want to avoid them at any cost. According to nutritionist Priya Kathpal these are the worst food combinations for your digestive tract. Protein + Protein: You might love your chicken salad with protein-rich beans but so much protein together can take a lot of energy to digest. So if you are combining protein with protein you are likely to feel very bloated. Also it can take a long time before you feel properly settled.