Scallops
Food · Protein · Food, Typed Supps
Scallops are a lean, quick-cooking seafood that packs a lot of protein and vitamin B12 into very few calories.
Stage by stage
- Chewing & Breakdown (Mouth): Scallops' tender adductor-muscle tissue, with little connective tissue, begins breaking down easily as soon as you start chewing.
- Acid Digestion (Stomach): Stomach acid and pepsin unlock the scallop's protein into peptides and free up protein-bound vitamin B12 for absorption.
- Nutrient Absorption (Small intestine): In the small intestine, amino acids, vitamin B12 (via intrinsic factor), and selenium are absorbed into the bloodstream.
- Muscle & Blood Support (Muscle tissue & bloodstream): The absorbed protein supports muscle repair and growth, B12 supports red blood cell formation, and selenium fuels antioxidant enzymes.
Timing
Scallops are naturally very low in fat, so cooking them in a bit of olive oil or butter can help with absorption of any fat-soluble nutrients in the rest of the meal.
Time to effect
- Weeks: Amino acids and vitamin B12 are absorbed within hours of eating, but measurable improvements in B12 and selenium status typically take several weeks of consistent intake to show up in blood work.
Allergens
Contains: Molluscs. Derived from what this food is, not from a product label.
Eating patterns
Fits: Pescatarian, Keto, Gluten-free. Depends on the product: Halal, Low-FODMAP.
Satiety
200 on the satiety index, where white bread is 100 — very high. Modelled from the Holt et al. (1995) measurements.
Environmental footprint
13.6 kg CO2e and 3691 litres of freshwater per kg, matched to "Fish (farmed)" in Poore & Nemecek (2018), Science 360.
Cost band
Pricey — roughly £28 per kg, as a band midpoint rather than a price.
Key nutrients
Nutrition per 100g
- Calories: 104.9
- Protein: 19.5g
- Carbohydrate: 4.2g
- of which sugars: 1.1g
- Fat: 1g
- of which saturated: 0.2g
- Fibre: 0g
- Sodium: 188mg
Food vs. supplement
Scallops pair vitamin B12 and selenium with lean, complete protein and marine omega-3s in one low-calorie package — a combination no single nutrient supplement replicates.
Kitchen tip
Buy "dry" (untreated) scallops rather than water-plumped "wet" ones, and pat them bone-dry before searing for a proper golden crust instead of a steamed, rubbery texture.
Common myth
"Scallops are bad for your cholesterol because they're shellfish." In reality: Scallops are relatively low in cholesterol and very low in saturated fat — the nutrient with the strongest effect on blood LDL cholesterol — and in 2015 the U.S. Dietary Guidelines dropped the old 300mg/day dietary cholesterol cap for lack of supporting evidence, so shellfish like scallops fit comfortably into a heart-healthy diet.
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