How much protein is in a can of tuna? A detailed nutritional breakdown
                                
                                
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                                    4 min read                                
                            
                                A single standard 5-ounce can of light tuna packed in water can provide over 30 grams of high-quality protein, making it an incredibly efficient and affordable source of this essential macronutrient. Beyond just raw numbers, understanding the specific protein content involves considering the tuna species and whether it is packed in water or oil.