What Are Dirty Calories? The Truth About Quality vs. Quantity
                                
                                
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                                    4 min read                                
                            
                                According to nutritionists, while a calorie is a calorie from a purely thermodynamic standpoint, its impact on the body varies significantly based on its source. This crucial distinction is the key to understanding what are dirty calories and why their source matters for long-term health, weight management, and energy levels.