Can I eat onions after gastric bypass?
                                
                                
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                                    4 min read                                
                            
                                According to the National Institutes of Health, food intolerances are common after gastric bypass, with some patients reporting difficulties with fibrous vegetables like onions.  This leaves many people asking: Can I eat onions after gastric bypass? Reintroducing onions requires a careful and phased approach to prevent digestive upset.