Nutritional Benefits of Dungeness Crab Meat: A Protein-Rich, Low-Fat Seafood

by Oleg Nikitenko August 26, 2024

Nutritional Benefits of Dungeness Crab Meat: Protein, Fat, Vitamins, and Minerals per 3-oz Serving

Dungeness crab meat is one of the most nutritionally dense lean protein sources available -- high protein, very low fat, exceptionally high in vitamin B12, and a significant source of selenium, zinc, copper, and phosphorus. This article covers the specific nutritional data per 3-oz (85g) serving of cooked Dungeness crab meat (based on USDA FoodData Central data), the health implications of each key nutrient, and the best ways to incorporate Dungeness crab into a health-focused diet.

Dungeness Crab Meat | Dungeness Merus Crab Meat | Dungeness Crab Clusters | Dungeness Crab Whole

Nutritional Profile: Per 3-oz (85g) Serving of Cooked Dungeness Crab Meat

Calories: approximately 73-80 kcal
Protein: approximately 15-19g (the range reflects variation between body meat and leg meat; leg meat is slightly higher in protein)
Total fat: approximately 0.8-1.3g (predominantly unsaturated)
Saturated fat: approximately 0.1-0.2g
Cholesterol: approximately 50-65mg
Sodium: approximately 250-320mg (naturally occurring; not added)
Carbohydrates: 0g

Key Nutrients: What Makes Dungeness Crab Nutritionally Exceptional

Vitamin B12: Exceptionally High

Dungeness crab is one of the richest dietary sources of vitamin B12 available -- a 3-oz serving provides approximately 6-9 mcg of B12, which represents approximately 250-375% of the Daily Value (DV is 2.4 mcg for adults). This is not a typo -- Dungeness crab provides 2.5 to nearly 4 times the daily requirement of B12 in a single 3-oz serving. Vitamin B12 is essential for: nerve function and myelin sheath maintenance (the protective coating around nerve fibers); red blood cell formation and the prevention of megaloblastic anemia; DNA synthesis; and cognitive function. B12 deficiency is common in older adults (due to reduced gastric acid production, which impairs B12 absorption from food) and in people who follow vegetarian or vegan diets (B12 is found almost exclusively in animal products). Dungeness crab is one of the most efficient dietary sources of B12 available.

Selenium: ~30% DV per 3-oz Serving

Selenium is a trace mineral that functions as a component of selenoproteins -- enzymes that protect cells from oxidative damage, regulate thyroid hormone metabolism, and support immune function. The selenium in Dungeness crab is in the form of selenomethionine, which is the most bioavailable form of dietary selenium (more efficiently absorbed than inorganic selenium supplements). Adequate selenium intake is associated with reduced risk of certain cancers, improved thyroid function, and enhanced immune response.

Zinc: ~15% DV per 3-oz Serving

Zinc is essential for immune function, wound healing, DNA synthesis, and the activity of over 300 enzymes in the body. Zinc from animal sources (including crab) is more bioavailable than zinc from plant sources because plant foods contain phytates that bind zinc and reduce absorption. Dungeness crab provides a meaningful contribution to daily zinc requirements in a single serving.

Copper: ~20% DV per 3-oz Serving

Copper is required for iron metabolism (copper is needed to incorporate iron into hemoglobin), connective tissue formation, nerve function, and antioxidant defense (copper is a component of superoxide dismutase, one of the body's primary antioxidant enzymes). Copper deficiency is uncommon but can cause anemia, bone abnormalities, and neurological problems. Dungeness crab is one of the better dietary sources of copper available.

Phosphorus: ~25% DV per 3-oz Serving

Phosphorus is the second most abundant mineral in the body (after calcium) and is essential for bone and tooth formation, energy metabolism (phosphorus is a component of ATP, the primary energy currency of cells), and cell membrane structure (phospholipids). Most Americans consume adequate phosphorus, but Dungeness crab provides a meaningful contribution alongside its other nutritional benefits.

Omega-3 Fatty Acids: Modest but Meaningful

Dungeness crab is low in total fat (0.8-1.3g per 3-oz serving), but the fats it does contain include omega-3 fatty acids (EPA and DHA) -- approximately 200-300mg per 3-oz serving. This is lower than fatty fish like salmon (which provides 1,500-2,000mg per 3-oz serving) but is a meaningful contribution for a very low-fat protein source. EPA and DHA are associated with reduced cardiovascular disease risk, reduced inflammation, and improved cognitive function. The American Heart Association recommends consuming seafood (particularly fatty fish) at least twice per week; Dungeness crab counts toward this recommendation.

How Dungeness Crab Compares to Other Protein Sources

vs. Chicken Breast (3 oz cooked)

Chicken breast: approximately 140 kcal, 26g protein, 3g fat. Dungeness crab: approximately 75 kcal, 17g protein, 1g fat. Dungeness crab has approximately half the calories and one-third the fat of chicken breast per serving, with comparable protein. Dungeness crab also provides significantly more B12, selenium, and zinc than chicken breast.

vs. Canned Tuna (3 oz)

Canned tuna (in water): approximately 100 kcal, 22g protein, 0.5g fat. Dungeness crab: approximately 75 kcal, 17g protein, 1g fat. Comparable profiles; Dungeness crab provides more B12 and copper than tuna; tuna provides more protein per serving. Tuna has mercury concerns at high consumption levels (particularly albacore/white tuna); Dungeness crab has lower mercury levels than albacore tuna.

vs. Shrimp (3 oz cooked)

Shrimp: approximately 84 kcal, 18g protein, 0.9g fat. Very similar profile to Dungeness crab. Dungeness crab provides more B12 and copper than shrimp; shrimp provides more cholesterol per serving (approximately 166mg vs. 50-65mg for Dungeness crab).

Health Considerations

Cholesterol

Dungeness crab contains approximately 50-65mg of cholesterol per 3-oz serving -- moderate compared to shrimp (approximately 166mg per 3 oz) and eggs (approximately 186mg per large egg). Current dietary guidelines (2020-2025 Dietary Guidelines for Americans) do not set a specific daily limit for dietary cholesterol for healthy adults, as the relationship between dietary cholesterol and blood cholesterol is more complex than previously understood. For most healthy adults, the cholesterol in Dungeness crab is not a concern at normal consumption levels.

Sodium

Dungeness crab contains approximately 250-320mg of naturally occurring sodium per 3-oz serving -- approximately 11-14% of the 2,300mg daily limit recommended by the Dietary Guidelines for Americans. This is a meaningful sodium contribution and should be considered by people managing sodium intake for blood pressure or kidney health. Avoid adding additional salt when cooking Dungeness crab -- the natural sodium content is sufficient seasoning for most preparations.

Shellfish Allergy

Crab is a crustacean shellfish and is one of the eight major food allergens recognized by the FDA. Shellfish allergy is one of the most common food allergies in adults and is typically lifelong. Symptoms can range from mild (hives, itching) to severe (anaphylaxis). People with a known shellfish allergy should not consume Dungeness crab.

Best Ways to Eat Dungeness Crab for Maximum Nutritional Benefit

Steamed or Boiled (Best for Nutrient Retention)

Steaming or boiling preserves the most nutrients -- water-soluble vitamins (B12) and minerals are not degraded by heat at normal cooking temperatures, but prolonged cooking in large amounts of water can leach some minerals into the cooking liquid. Steam rather than boil when possible to minimize mineral loss.

Crab Salad (Lowest Calorie Preparation)

Picked Dungeness crab meat tossed with mixed greens, avocado, cucumber, and a light lemon vinaigrette -- approximately 200-250 kcal per serving with the crab as the primary protein; the avocado adds healthy monounsaturated fats that complement the crab's omega-3s.

Crab Cakes (Baked, Not Fried)

Baked crab cakes using the minimal-filler Maryland standard (1 tbsp breadcrumbs per 8 oz of crab meat) add minimal calories to the crab's nutritional profile. See the complete crab cake guide for the base recipe.

Crab Linguine (Light Pasta Preparation)

Dungeness crab meat tossed with linguine, olive oil, garlic, and lemon -- the olive oil adds heart-healthy monounsaturated fats; the pasta provides complex carbohydrates; the crab provides the protein and micronutrients. A complete, balanced meal in one dish.

Dungeness Crab Meat | Dungeness Merus Crab Meat | Dungeness Crab Clusters

Also see: 5 Crab Dishes to Make at Home | Crab Meat Nutrition: Health Benefits and Facts | How to Buy Crab Online: The Complete Buyer's Guide

Watch seafood preparation videos on the Global Seafoods YouTube Channel

Frequently Asked Questions About Dungeness Crab Nutrition

How much vitamin B12 is in Dungeness crab?

A 3-oz (85g) serving of cooked Dungeness crab meat provides approximately 6-9 mcg of vitamin B12, which is approximately 250-375% of the Daily Value (DV is 2.4 mcg for adults). Dungeness crab is one of the richest dietary sources of B12 available -- a single serving provides 2.5 to nearly 4 times the daily requirement. This makes Dungeness crab particularly valuable for older adults (who often have reduced B12 absorption) and for people who consume limited amounts of other B12-rich foods (red meat, dairy, eggs).

Is Dungeness crab high in cholesterol?

Dungeness crab contains approximately 50-65mg of cholesterol per 3-oz serving -- moderate compared to shrimp (approximately 166mg per 3 oz) and eggs (approximately 186mg per large egg). Current dietary guidelines (2020-2025 Dietary Guidelines for Americans) do not set a specific daily limit for dietary cholesterol for healthy adults. For most healthy adults, the cholesterol in Dungeness crab is not a concern at normal consumption levels (1-2 servings per week).

Is Dungeness crab good for weight loss?

Yes -- Dungeness crab is an excellent protein source for weight management: approximately 75-80 kcal per 3-oz serving with 15-19g of protein and less than 1.5g of fat. The high protein content promotes satiety (the feeling of fullness), which can reduce overall calorie intake. The low calorie density means you can eat a satisfying portion without a large calorie contribution. The key is preparation method -- steamed or boiled Dungeness crab adds minimal calories; deep-fried preparations or heavy butter sauces add significant calories.

Does Dungeness crab contain mercury?

Dungeness crab is considered a low-mercury seafood. The FDA and EPA classify Dungeness crab as a "best choice" seafood for mercury exposure -- it can be consumed 2-3 times per week by adults, pregnant women, and children without mercury concerns. This is in contrast to high-mercury species (shark, swordfish, king mackerel, tilefish from the Gulf of Mexico) that should be limited or avoided by pregnant women and young children.