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Is Crab Good For You?

May 21, 2022 by Food For Net Leave a Comment

A single crab on a table next to a bowl of oil, looking at whether crab is good for you

Seafood is famous for being both delicious and healthy. However, with so many different types to choose from, how do you ever know which are the best?

We’ve talked about other types of seafood in the past, like oysters, mussels, and shrimp. Now it’s time to take a look at crab and ask – is crab good for you?

Part of the answer comes from looking at the nutrient profile. This tells us a lot about what how crabs will impact your health. Of course, crab nutrition isn’t the full story. There are some other things to think about as well.

Table of Contents

  • Is Crab Good For Your Health?
    • Crab Nutrition
    • Benefits Of Crab
      • Can Promote Weight Loss
      • Could Promote Heart Health
      • Relevant For Brain Health
      • Could Lower Disease Risk
      • A Keto-Friendly Ingredient
      • Low In Mercury
      • The Flavor
    • Problems With Crab
      • Often Served With High Calorie Ingredients
      • Relatively High In Cholesterol
      • Can Be High In Sodium
      • It’s Expensive
      • The Omega 3 Content Isn’t Exceptional
    • Types Of Crab
    • What About Imitation Crab?
    • Final Thoughts

Is Crab Good For Your Health?

  • Crab Nutrition
  • Benefits Of Crab
  • Problems With Crab
  • Types Of Crab
  • What About Imitation Crab?
  • Final Thoughts

Crab Nutrition

A white plate containing a cooked crab

Let’s begin with the most obvious topic – nutrition. For a full cup of cooked crab, you get this balance of nutrients:

  • 97 calories
  • Protein: 21 grams
  • Fat: < 1 gram
  • Carbohydrates: 0 grams
  • Fiber: 0 grams
  • Sugar: 0 grams

The protein content of crab is simply exceptional, especially are crab is fairly low in calories and fat. For that matter, almost all of the calories in crab come from protein. The other macronutrients barely get a look in.

There are some interesting nutrients present too, including vitamin B12, folate, selenium, iron, and zinc. Not only are these vitamins and minerals all important for health, but it’s also easy to be deficient in some of them.

What could be better than a protein rich ingredient that’s high in nutrients and low in calories?

Benefits Of Crab

Can Promote Weight Loss

The fact that crab is high in protein, low in fat, and low in calories makes it an excellent choice for weight loss.

You could easily use crab as the protein part of a weight loss meal. Just make sure to pair your crab with low calorie sauces or toppings. Drenching it in butter certainly won’t help you lose weight.

Could Promote Heart Health

Crab is relevant for your heart as well, partly because of the omega 3 fatty acids. These have been linked to decreased triglycerides and reducing the risk of heartbeat irregularities.

The fact that crab is low in fat helps as well. After all, eating large amounts of saturated fat is often linked to heart problems. 

Relevant For Brain Health

Crabs are important for your brain as well. The omega 3s are key players here as well. They’ve even been linked to a lower risk of Alzheimer’s disease and dementia.

Omega 3s help with healthy brains as well, supporting your memory and cognition. You might even find that you think more clearly if you’re consuming fish and seafood regularly.

That’s not all. Omega 3s can also help with your mental health. This includes decreasing your risk of conditions like depression and anxiety, while also helping people with such conditions to recover.  

Could Lower Disease Risk

Crab has plenty going for it, including many vitamins and minerals, omega 3 fatty acids, and protein. All of these features are important for keeping you healthy and cutting down your disease risk.

Crab could offer even more benefits if you’re eating it instead of a saturated fat rich source of protein, like red meat.

It’s also no secret that whole food ingredients are much better for you than processed foods. This is another reason for turning to seafood regularly.

A Keto-Friendly Ingredient

A wooden table with various fresh crabs and lemons

Crab is fantastic on a keto diet as you’re getting very few carbs. In fact, a 100 gram serving often contains less than a gram of net carbs.

The only issue is that crab is low in fat. This isn’t ideal on a keto diet, as you’re trying to get most of your calories from fat, rather than protein.

Resolving the problem is as simple as serving crab with a high fat sauce or as part of a meal that contains plenty of fat.

Low In Mercury

If you’re eating seafood, then you’ll need to think about mercury. Too much mercury can lead to all types of problems, including negative effects on brain health, damage to the immune system, and kidney issues.

Mercury is most significant for young children and for pregnant women. However, even healthy adults need to be cautious with their mercury intake.

Shellfish like crabs are fantastic as they’re naturally lower in mercury. They’re also less likely to be contaminated by other chemicals.

Most people can easily fit two or three servings of crab into their diet every week. 

The Flavor

There’s one more powerful feature of crab to mention – the way that it tastes. Most types of seafood have a fishy aftertaste that puts some people off.

Crab avoids the problem entirely. Instead of being fishy, it mostly has a salty flavor, along with slight sweetness. The taste varies somewhat depending on the type you choose, but crab is delicious no matter what.

Problems With Crab

Often Served With High Calorie Ingredients

Earlier on, we mentioned that crab can help you to lose weight. That’s true, but the way crab is prepared makes a huge difference.

If your crab is being served with a high fat sauce or plenty of butter, then the calorie content is going to be pretty high. This is enough to promote weight gain, particularly if you’re also eating large portions.

Relatively High In Cholesterol

Crab meat does contain cholesterol, although the amount varies depending on the crab species . Alaska king crab is one of the best choices, giving you around 36 mg of cholesterol per serving. In contrast, steamed blue crab has more than 60 mg of cholesterol for the same serving.

Some recommendations suggest you should be having no more than 200 to 300 mg of cholesterol per day. A single serving of crab is a decent chunk of that target.

Thankfully, cholesterol in food doesn’t have a dramatic impact on blood cholesterol for most people. So, if you’re healthy, you don’t need to worry about cholesterol much at all.

Crab is also interesting because it’s high in cholesterol and low in fat. That’s an unusual combination that should reduce the risk of any heart problems from eating crab.

Can Be High In Sodium

A plate with cooked crab legs surrounded by lemons

Crabs come from the sea, so it’s not surprising that they contain a decent amount of sodium. This issue is even worse if you sprinkle salt on top of your crab as well.

Sometimes you might even be getting close to half of your daily sodium intake from a single serving of crab.

Now, sodium isn’t all bad. You need some of this mineral to be healthy, especially as it’s an electrolyte. The problem is that most of us are already consuming more sodium than we need.

Anyone needing to decrease their sodium intake may need to be cautious with crab, perhaps only having small servings. You could also turn to a different type of seafood instead. For example, most types of fish are naturally low in sodium and also provide plenty of omega 3 fatty acids.

It’s Expensive

The benefits of crab can sometimes be hard to access, as crab is so expensive. The price comes down to economics, as demand for crab is high, but crabs aren’t simple to catch and are highly perishable.

If you love the flavor and texture of crab, then it may well be worth the price. However, if you’re mostly focused on health, then you could focus on lower priced type of seafood. 

The Omega 3 Content Isn’t Exceptional

Many of the benefits of crab come from the omega 3 fatty acids. While you do get a decent amount of these, the levels are much lower than with fatty fish like salmon, tuna, or anchovies.

In fact, a 2-ounce serving of anchovies contains 1,200 mg of omega 3s, while 6 ounces of farmed salmon contains more than 4,500 mg of omega 3. A 3-ounce serving of crab, on the other hand, contains just 351 mg of omega 3s.

The amounts of omega 3 do vary depending on the species of crab. There may also be differences between one individual crab and the next. Still, there’s no denying that the omega 3 content of crab isn’t that exciting.

Types Of Crab

We also need to talk about the types of crab, as these have plenty of differences. We’re not just talking about size and flavor differences, either. The nutritional profiles can vary as well.

King crabs are one of the most famous types. These crabs have large claws, so it’s easy to crack them open and eat the sweet meat.

Dungeness carbs are another large legged crab. The meat is sweet too and also quite meaty.

Blue crab is incredibly popular. The meat is often thought to be sweeter and more delicious than any other type of crab.

Snow crabs are a pain to eat, as they have thin legs that don’t contain a large amount of meat.

Jonah crabs are small, but most of their shell is often removed before serving to make things easier for diners.

There are also soft shell crabs. These are actually blue crabs that are part way through the molting process. You’ll normally see these fried rather than boiled, as boiling tends to make them fall apart.

This isn’t a complete list of crab types, but you get the picture.

What About Imitation Crab?

A brown dish with imitation crab

Not surprisingly, imitation crab isn’t crab at all. Instead, the product is made from fish flesh that has been pulverized, heated, and shaped.

Because imitation crab is made from fish, it does still contain some omega 3 fatty acids, so it should offer some of the benefits you see with crab. However, the nutrient profile is very different and the omega 3 content is much lower.

Imitation crab also tends to be lower in protein and higher in carbs than regular crab. It may even contain added sugar.

We’re also talking about a processed food, one that may also rely on additives. This isn’t ideal. Sticking to whole foods is always a better idea for health.

Some restaurants and companies use the term ‘krab’ rather than ‘crab’ to show they’re using an imitation product. Other times the term ‘imitation crab’ may be used somewhere.

You’ll still need to check carefully though, as imitation crab isn’t always obvious. This is particularly true if you’re eating a seafood salad, sushi, or another dish with multiple ingredients.

Final Thoughts

Crab isn’t just delicious. It’s also incredibly healthy, offering plenty of protein and some omega 3 fatty acids, while being low in carbs and fat.

These features all help your body to function well and lower your risk of disease. Plus, crab lacks the fishy aftertaste that is found with many types of seafood – making it an easy way to boost your omega 3 intake.

The main problem is the sodium content. This isn’t something you can easily avoid. But, if you love crab, you could try cutting down sodium elsewhere in your diet.

Or, go with a different type of seafood. Fish tends to be lower in sodium and offers many of the same benefits as crab.

Filed Under: Health + Wellness Tagged With: Crab, Seafood

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Hi! My name is Rick and FoodForNet.com is just a website about food and drink that I like. That includes sous vide, slow cooking, grilling, smoking, and homemade pizzas.

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