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Raw Oysters Nutritional Facts

author image Carolyn Robbins
Carolyn Robbins began writing in 2006. Her work appears on various websites and covers various topics including neuroscience, physiology, nutrition and fitness. Robbins graduated with a bachelor of science degree in biology and theology from Saint Vincent College.
Raw Oysters Nutritional Facts
A platter of fresh oysters with lemon Photo Credit: javarman3/iStock/Getty Images

While oysters are nutrient-rich, you take a significant risk by eating them raw. The U.S. Food and Drug Administration warns that raw oysters may be contaminated with Vibrio vulnificus, also known as V. vulnificus, which is a pathogen that can cause life-threatening sickness. Cook your oysters first to benefit from the nutrients without risking illness.

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Calories and Fat

Six, medium-sized raw oysters contain only 43 calories. The total fat content is 1.44 grams. As such, oysters are a low-fat, low-calorie food.


For so few calories, raw oysters pack a substantial serving of protein. Six, medium-sized oysters contain 4.8 grams of protein.

Other Nutrients

Oysters are a good source of essential minerals including phosphorus, calcium, potassium and zinc. The quantity of vitamins found in oysters are negligible except for vitamin B-12. A serving contains 7.35 micrograms of B-12.

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