How Healthy is a Subway Tuna Sandwich?
                                
                                
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                                    5 min read                                
                            
                                According to official Subway nutrition data, a standard 6-inch tuna sandwich has approximately 480-530 calories, depending on the specific bread. Despite its reputation as a healthier fast-food option, the mayo-heavy preparation raises questions about how healthy is a Subway tuna sandwich in reality. This article breaks down its nutritional profile to help you understand what you are really eating.