Blue Cheese
Food · Dairy · Food, Typed Supps
Blue cheese's blue streaks are edible mold that give it its bite, and every bite also brings calcium for your bones — just watch the salt.
Stage by stage
- Mouth (Mouth & Saliva): Chewing releases blue cheese's salty, tangy compounds and its characteristic aroma from the Penicillium roqueforti mold veined through it.
- Stomach (Stomach): In the stomach, acid and pepsin begin breaking down the cheese's casein protein while its fat content slows overall digestion.
- Small Intestine (Small Intestine): In the small intestine, calcium, phosphorus, protein, and sodium are absorbed, along with tyramine formed during the cheese's aging process.
- Bone & Blood (Bones & Bloodstream): Calcium is deposited into bone, sodium moves into the bloodstream affecting fluid balance, and tyramine is normally broken down by enzymes before it can build up.
Timing
Blue cheese is calorie- and sodium-dense, so it's typically best eaten in modest portions (about 1 oz/28g) alongside other foods rather than as a standalone snack.
Time to effect
- Hours to Months: Sodium and tyramine are absorbed and can produce measurable effects within about 30-90 minutes of eating, while blue cheese's contribution to bone health via calcium only builds up after months of consistent dietary intake.
Allergens
Contains: Milk. Derived from what this food is, not from a product label.
Eating patterns
Fits: Vegetarian, Pescatarian, Halal, Kosher, Keto, Gluten-free. Depends on the product: Low-FODMAP.
Satiety
86 on the satiety index, where white bread is 100 — low. Modelled from the Holt et al. (1995) measurements.
Environmental footprint
23.9 kg CO2e and 5605 litres of freshwater per kg, matched to "Cheese" in Poore & Nemecek (2018), Science 360.
Cost band
Pricey — roughly £16 per kg, as a band midpoint rather than a price.
Key nutrients
Nutrition per 100g
- Calories: 370.9
- Protein: 19.1g
- Carbohydrate: 0.3g
- of which sugars: 0.3g
- Fat: 32.9g
- of which saturated: 21.9g
- Fibre: 0g
- Sodium: 780mg
Food vs. supplement
Blue cheese delivers calcium and vitamin B12 in a whole-food matrix along with protein and phosphorus, at a bioavailability broadly similar to supplement forms, but it also contributes far more sodium and tyramine than an isolated calcium or B12 supplement would.
Kitchen tip
Check the label for "pasteurized milk," and let cold cheese sit out for about 20-30 minutes before serving to bring out its full flavor; pregnant people, adults 65+, and anyone with a weakened immune system are advised by the CDC to avoid unpasteurized soft cheeses due to Listeria risk.
Common myth
"The mold in blue cheese is the same mold used to make penicillin, so eating it works like a natural antibiotic." In reality: Blue cheese is cultured with Penicillium roqueforti, a different species from Penicillium chrysogenum, the mold historically used to manufacture the antibiotic penicillin; eating blue cheese has no antibiotic effect on the body, though the fungus itself is safe to eat for most healthy adults.
Recipes that use it
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