Red Snapper
Food · Protein · Food, Typed Supps
Red snapper is a lean, mild white fish that gives your body high-quality protein plus a big boost of selenium and vitamin B12.
Stage by stage
- Chewing (Mouth): Chewing breaks down red snapper's lean, flaky flesh, beginning mechanical digestion of its protein.
- Protein Breakdown (Stomach): Stomach acid and pepsin denature the fish's proteins into peptides and free amino acids.
- Absorption (Small Intestine): The small intestine absorbs amino acids along with selenium, vitamin B12, and vitamin D into the bloodstream.
- Tissue Repair & Defense (Muscle & Immune Cells): These nutrients support muscle protein synthesis, thyroid- and antioxidant-related selenoproteins, and nerve and immune function.
Timing
Eating red snapper alongside a bit of dietary fat, such as olive oil, can modestly aid absorption of its vitamin D; otherwise timing isn't critical for its protein and mineral content.
Time to effect
- Days to weeks: Fullness and amino acid availability begin within hours of eating, but measurable benefits to selenium and B12 status and to muscle maintenance build over days to weeks of consistent intake.
Allergens
Contains: Fish. Derived from what this food is, not from a product label.
Eating patterns
Fits: Pescatarian, Kosher, Keto, Gluten-free. Depends on the product: Halal, Low-FODMAP.
Satiety
207 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 £20 per kg, as a band midpoint rather than a price.
Key nutrients
Nutrition per 100g
- Calories: 100
- Protein: 20.5g
- Carbohydrate: 0g
- of which sugars: 0g
- Fat: 1.3g
- of which saturated: 0.3g
- Fibre: 0g
- Sodium: 64mg
Food vs. supplement
A 100 g raw serving of red snapper provides about 20.5 g complete protein, 69% DV selenium, and 125% DV vitamin B12 in one low-fat package — a nutrient density no single supplement pill matches.
Kitchen tip
Bake, grill, or pan-sear red snapper to an internal temperature of 145°F (63°C); as a lean fish it overcooks and dries out quickly, so watch cook times closely.
Common myth
"Red snapper" on a menu or at the fish counter is genuine red snapper. In reality: DNA testing by Oceana found that only about 6% of fish sold nationwide as "red snapper" (7 of 120 samples) were the true species, Lutjanus campechanus; most "snapper" sold in the US is a different, often cheaper fish substituted under the popular name — a labeling problem distinct from the nutrition profile of the real fish.
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