The Surprising Nutritional Science: Why are unfrosted Pop Tarts more calories?
                                
                                
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                                    4 min read                                
                            
                                In 2009, a college student's discovery that unfrosted Pop-Tarts contained more calories per serving than frosted versions went viral, shocking snackers everywhere. This seemingly backwards nutritional fact begs the question: **Why are unfrosted Pop Tarts more calories?** The answer lies not in a secret dieting hack, but in a subtle change to the pastry's physical composition.