Caught in the shallow waters of the Atlantic Ocean, blue crabs are crustacean shellfish commonly prepared by steaming and eaten for their flaky and sweet meat. High in calories from protein, blue crab meat is also high in cholesterol.
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The U.S. Department of Agriculture states that a 1-cup serving of meat from steamed blue crabs provides 120 calories. Around 102 calories come from proteins and fats deliver 18 calories. No calories within crab come from carbohydrates.
A 1-cup serving of steamed blue crab meat weighs approximately 118 g, according to the U.S. Department of Agriculture. Protein makes up 24 g and only 2 g are fat. Other nutrients and water make up the remainder.
Steamed blue crab meat is high in certain vitamins, including vitamin B6, B12, C, and E, thiamin, niacin, folate and pantothenic acid. Dietary minerals within blue crab include calcium, copper, magnesium, manganese, phosphorus, potassium, selenium and zinc.
A serving of steamed blue crab meat is also high in cholesterol at 117 mg or nearly 40 percent of the daily recommended intake. According to the American Heart Association, excess cholesterol in the diet can increase the risk of heart disease and the average adult should limit the daily intake to 300 mg per day.