Understanding Your Muffin: How Unhealthy Are Muffins and What Makes Them That Way?
                                
                                
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                                    4 min read                                
                            
                                A large blueberry muffin from a coffee shop can contain up to 470 calories and 39 grams of sugar—more than a chocolate frosted donut, according to research. This fact reveals that while they seem wholesome, the answer to 'How unhealthy are muffins?' is often, 'very', especially when store-bought.