Is Popcorn With No Butter Unhealthy? The Surprising Truth
                                
                                
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                                    4 min read                                
                            
                                According to the USDA, a three-cup serving of plain, air-popped popcorn contains less than 100 calories, making it a surprisingly low-calorie snack. So, is popcorn with no butter unhealthy? This article explores the nutritional facts behind the popular treat.