How much sugar is in a sub sandwich? Unveiling the truth about this popular meal
                                
                                
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                                    3 min read                                
                            
                                A six-inch sub can contain a surprising amount of sugar, with numbers ranging from 5 to over 16 grams depending on the ingredients used,. The question of how much sugar is in a sub sandwich and its sources is critical. Despite the perception of being healthy, subs can hide substantial amounts of added sugars.