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Octopus

Seafood

Octopus

A lean, zero-carb marine mollusk packed with high-quality protein and essential micronutrients.

A lean, high-protein marine mollusk known for its chewy texture and mild, sweet flavor. It is a staple in Mediterranean and Asian cuisines, typically requiring tenderizing or slow cooking to achieve optimal texture.

protein-dense lean seafood

Typical serving · 85g

Common varieties · common octopus, giant pacific octopus, day octopus, caribbean dwarf octopus, muelleri octopus

85health

Overall context score across nutrition, safety, and diet fit

At a glance

Quick facts

Simple indicators based on nutrition, processing, and diet fit.

Low calorieHigh proteinLow carbLow glycemicWeight lossDiabetes-friendly

The story

What makes it unique

Octopus is a high-protein, extremely low-fat food with zero carbohydrates. Its dense muscle structure results in slow digestion and prolonged satiety. Being a whole, unprocessed animal food, it provides complete amino acids and essential micronutrients like B12 and selenium without glycemic impact.

Varieties: common octopus · giant pacific octopus · day octopus · caribbean dwarf octopus · muelleri octopus

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Per 100g

Nutrition breakdown

Macro balance and key metrics at a glance.

Energy

82kcal

Density 0.82 kcal/g

Protein

14.9g

Carbs

2.2g

Fat

1g

Fiber

0g

Sugar

0 g

Sodium

230 mg

Potassium

350 mg

Glycemic index

0

Glycemic load

0

Water content

82%

Standout compounds

Nutrient highlights

  • Vitamin B12

    high

    Essential for neurological function and red blood cell formation

  • Selenium

    high

    Provides antioxidant protection and supports thyroid function

  • Iron

    moderate

    Crucial for oxygen transport in the blood

  • Copper

    high

    Supports iron metabolism and nervous system health

Wellness map

Health scores & processing

Weight loss
88
Satiety
82
Blood sugar
95
Gut health
65
Heart health
78
Fitness
90
Processing
95

NOVA processing scale

1
Min
2
3
4
Ultra

Minimally processed · Whole food

Fresh or frozen octopus is a whole, unprocessed food. Culinary preparation involves physical tenderizing and heat cooking without industrial additives.

Diet compatibility

  • Weight loss
  • Muscle gain
  • Diabetes
  • Gut health
  • Low carb
  • High protein
  • Heart health

Relative standing

Food rankings

Qualitative ranks compared to similar whole foods.

  • Satietygood
  • Blood sugarexcellent
  • Nutrient densitygood
  • Fitness fuelgood
  • Processing qualityexcellent

Eat with confidence

Food safety profile

Generally safe when cooked thoroughly, which eliminates parasite and bacterial risks. Raw consumption carries inherent microbial risks. Moderate heavy metal accumulation is present compared to smaller seafood.

75safety

Evidence confidence 85%

  • Pesticideslow
  • Antibioticslow
  • Heavy metalsmoderate
  • Contaminationmoderate

Watch for

  • Vibrio parahaemolyticus
  • Anisakis parasites
  • cadmium
  • lead

Safer choices

Sourcing from clean, well-monitored fisheries and choosing smaller, younger octopuses can reduce heavy metal exposure.

Prep tips

Cook to an internal temperature of 145°F (63°C) to neutralize parasites and bacteria. Avoid raw consumption unless specifically treated for sashimi.

Monitoring of heavy metals in cephalopods varies by region, with some coastal areas showing higher cadmium accumulation.

Deep dive

Health analysis

How this food may fit different goals and preparation choices.

  1. Weight loss

    Extremely low in calories and fat while being highly satiating due to dense protein and a chewy texture that naturally slows eating speed.

  2. Blood sugar

    Zero glycemic impact makes it ideal for stabilizing blood sugar and managing insulin response.

  3. Fitness & energy

    Provides high-quality complete protein for muscle repair, though it lacks fast carbohydrates needed for quick glycogen replenishment.

  4. Gut health

    Lacks dietary fiber, and its tough muscle fibers can be difficult to digest if not properly tenderized during cooking.

  5. Processing quality

    A whole food that requires cooking to be edible; avoid pre-breaded or heavily marinated versions that add refined carbs and excess sodium.

  6. Food safety

    Proper cooking is essential to neutralize marine parasites and bacteria; moderate risk of heavy metals requires mindful sourcing.

  7. Common mistakes

    Overcooking makes it rubbery and nearly inedible, while undercooking leaves it tough and increases food safety risks.

  8. Best preparation

    Slow braising or grilling after a long boil ensures tenderness while preserving its lean nutritional profile.

Practical guide

Best use cases

When and how this food fits real eating patterns.

  • High-protein low-calorie dinner

    Provides substantial protein for muscle maintenance with minimal caloric impact.

  • Keto seafood entree

    Zero carbohydrates make it ideal for maintaining ketosis while enjoying diverse seafood.

  • Post-workout muscle recovery

    Rich in complete amino acids necessary for repairing muscle tissue after exercise.

  • Mediterranean diet meal

    A traditional staple that aligns perfectly with the lean protein and healthy fat emphasis of the Mediterranean diet.

Balance sheet

Pros & cons

Upsides

  • Very high in complete protein
  • Extremely low calorie and fat
  • Zero carbohydrates
  • Rich in vitamin B12 and selenium
  • Lower mercury than large predatory fish

Trade-offs

  • Can be rubbery and unpalatable if overcooked
  • Contains dietary cholesterol
  • Lacks dietary fiber
  • Moderate heavy metal accumulation risk
  • Requires specific cooking techniques for tenderness

Fit check

Who is it for?

Great match

  • keto and low-carb diets
  • lean muscle gain
  • weight loss plateaus
  • Mediterranean diet

Consider alternatives

  • those with seafood allergies
  • people seeking quick-cooking meals
  • strict low-cholesterol diets
  • individuals with severe digestive sensitivities

Side by side

How it compares

Open the full head-to-head analysis for nutrition, safety, and practical tradeoffs.

  • Octopus

    This food

    Octopus

    VS90% alike
    Squid

    Compare with

    Squid

    Squid is slightly lower in calories but higher in cholesterol, while octopus provides more iron and a meatier texture.

    Squid is slightly lower in calories, but octopus offers more iron and a meatier bite for better satiety.

    Octopus vs Squid
  • Octopus

    This food

    Octopus

    VS85% alike
    Shrimp

    Compare with

    Shrimp

    Shrimp is easier to cook and more widely available, while octopus is denser in micronutrients like iron and B12.

    Shrimp is quicker to cook, but octopus provides more iron and vitamin B12 per serving.

    Octopus vs Shrimp
  • Octopus

    This food

    Octopus

    VS80% alike
    Crab

    Compare with

    Crab

    Crab is lower in sodium and easier to eat, but octopus is significantly higher in protein density and iron.

    Crab is lower in sodium, but octopus wins for higher protein density and iron content.

  • Octopus

    This food

    Octopus

    VS75% alike
    Lobster

    Compare with

    Lobster

    Lobster is richer and more tender, while octopus is leaner, cheaper, and higher in iron and B12.

    Lobster is more tender, but octopus is leaner and provides more iron per calorie.

    Octopus vs Lobster
  • Octopus

    This food

    Octopus

    VS70% alike
    Clams

    Compare with

    Clams

    Clams offer more B12 and iron but contain some carbohydrates, whereas octopus is strictly zero-carb.

    Clams are higher in iron and B12, but octopus is zero-carb and better for strict keto diets.

    Octopus vs Clams
  • Octopus

    This food

    Octopus

    VS70% alike
    Mussels

    Compare with

    Mussels

    Mussels are higher in omega-3s and easier to cook, while octopus is leaner and zero-carb.

    Mussels provide more omega-3s, but octopus is leaner and completely carb-free.

    Octopus vs Mussels
  • Octopus

    This food

    Octopus

    VS75% alike
    Scallops

    Compare with

    Scallops

    Scallops are sweeter and more tender, while octopus is chewier, lower in calories, and higher in iron.

    Scallops are sweeter and more tender, but octopus is lower in calories and higher in iron.

    Octopus vs Scallops
  • Octopus

    This food

    Octopus

    VS65% alike
    Tuna

    Compare with

    Tuna

    Tuna offers more protein and omega-3s per ounce but comes with a significantly higher mercury risk than octopus.

    Tuna provides more protein and omega-3s, but octopus is much lower in mercury.

    Octopus vs Tuna
  • Octopus

    This food

    Octopus

    VS50% alike
    Salmon

    Compare with

    Salmon

    Salmon is rich in omega-3 fats and easy to digest, while octopus is a leaner, zero-carb alternative with more B12.

    Salmon is higher in omega-3s and easier to digest, but octopus is leaner and zero-carb.

    Octopus vs Salmon
  • Octopus

    This food

    Octopus

    VS60% alike
    Chicken Breast

    Compare with

    Chicken Breast

    Chicken is cheaper and easier to cook, while octopus offers vastly more vitamin B12, selenium, and iron per calorie.

    Chicken breast is cheaper and more versatile, but octopus provides far more vitamin B12 and selenium.

    Octopus vs Chicken Breast

Common questions

FAQ

Answers aligned with how people search for this food.

  • Is octopus good for weight loss?

    Yes, octopus is very low in calories and fat while providing high-quality protein that promotes fullness and preserves lean muscle mass.

  • Can diabetics eat octopus?

    Yes, octopus contains zero carbohydrates and will not spike blood sugar levels, making it an excellent protein choice for diabetic diets.

  • Is octopus high in cholesterol?

    Octopus does contain dietary cholesterol, but it is very low in saturated fat, which has a more significant impact on blood cholesterol for most people.

  • Does octopus have a lot of mercury?

    Octopus generally has moderate mercury levels, lower than large predatory fish like tuna but higher than small fish like sardines.

  • Is octopus hard to digest?

    It can be if not cooked properly. Slow cooking or tenderizing breaks down the tough muscle fibers, making it much easier to digest.

  • Is octopus keto-friendly?

    Yes, octopus is virtually carb-free and fits perfectly into a ketogenic or strict low-carb diet.

  • What nutrients is octopus high in?

    Octopus is an excellent source of vitamin B12, selenium, and iron, which are crucial for neurological health and oxygen transport.

  • Can you eat octopus raw?

    Eating raw octopus carries a risk of parasites and bacterial infection; it should only be consumed raw if specifically prepared as sushi or sashigi from reputable, parasite-treated sources.

Transparency

Data confidence

Estimated confidence for nutrition data, interpretation, safety notes, and comparisons.

90

Nutrition data

85

Health analysis

80

Food safety

85

Comparisons