Are Tuna Sandwiches High in Calories? The Truth About Your Lunch
                                
                                
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                                    3 min read                                
                            
                                While canned tuna is naturally low in calories, a traditional tuna salad sandwich with mayonnaise and white bread can pack over 400 calories. The calorie count can vary dramatically depending on the ingredients, making it crucial to know what's in your tuna salad.