Is 1 g of protein 4 calories? Unpacking the Nutritional Truth
                                
                                
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                                    4 min read                                
                            
                                According to the USDA, protein provides 4 calories per gram based on a standardized system. But is 1 g of protein 4 calories in a practical sense, or is the biological reality more complex? This article explores the science behind this common nutritional figure and what it means for your daily energy intake.