How many calories are in a fresh mushroom? Exploring the answer.
                                
                                
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                                    4 min read                                
                            
                                According to the USDA, a serving of five medium raw white mushrooms contains just 20 calories. The fungi are a powerhouse of nutrition despite being incredibly low in calories, making them a popular choice for health-conscious consumers and an excellent addition to almost any diet. Learning how many calories are in a fresh mushroom can help you make smarter dietary choices.