Why is a Big Mac Unhealthy? A Comprehensive Nutritional Breakdown
                                
                                
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                                    4 min read                                
                            
                                According to McDonald's own nutritional information, a single Big Mac in the U.S. contains 580 calories, 34 grams of fat, and over 1,000 milligrams of sodium, revealing the core reasons why a Big Mac is unhealthy. This classic fast-food item packs a significant caloric and nutrient load, with few genuine health benefits.