Plain Yogurt
Food · Dairy · Food, Typed Supps
Plain yogurt gives you protein and calcium in a form that's often gentler on your stomach than milk, thanks to the friendly bacteria that made it.
Stage by stage
- Chewing & swallowing (Mouth): Chewing releases yogurt's tangy lactic acid flavor, a byproduct of the bacterial fermentation that turned milk into yogurt.
- Acid exposure (Stomach): Stomach acid kills off a large share of the live bacteria, but yogurt's fermentation has already partially broken down its lactose, making it easier to digest than an equivalent amount of milk.
- Nutrient absorption (Small intestine): The small intestine absorbs yogurt's protein, calcium, phosphorus, and vitamin B12, while any surviving bacterial cultures continue on toward the colon.
- Calcium & protein uptake (Bones & muscles): Absorbed calcium and phosphorus are built into bone tissue, and yogurt's protein supplies amino acids that support muscle maintenance and repair.
Timing
Yogurt's calcium and vitamin B12 don't require pairing with additional food for absorption, though eating it in the same meal as iron-rich foods may modestly reduce iron absorption.
Time to effect
- Weeks to months: Digestive comfort and fullness from yogurt's protein are noticeable within hours, but measurable bone health benefits from regular calcium and protein intake build up over weeks to months of consistent consumption.
Allergens
Contains: Milk. Derived from what this food is, not from a product label.
Eating patterns
Fits: Vegetarian, Pescatarian, Halal, Kosher, Keto, Gluten-free.
Satiety
88 on the satiety index, where white bread is 100 — low. Measured by Holt et al. (1995).
Environmental footprint
3.2 kg CO2e and 628 litres of freshwater per kg, matched to "Milk" in Poore & Nemecek (2018), Science 360.
Cost band
Cheap — roughly £2.5 per kg, as a band midpoint rather than a price.
Key nutrients
Nutrition per 100g
- Calories: 73.1
- Protein: 5.1g
- Carbohydrate: 5g
- of which sugars: 4.9g
- Fat: 3.2g
- of which saturated: 2.2g
- Fibre: 0.1g
- Sodium: 58mg
Food vs. supplement
Plain yogurt supplies calcium, high-quality protein, vitamin B12, and, when labeled with live and active cultures, beneficial bacteria in one food matrix, an advantage a standalone calcium or probiotic supplement doesn't offer.
Kitchen tip
Choose plain yogurt labeled "live and active cultures" over flavored, sweetened varieties, and add your own fruit or a drizzle of honey to control added sugar.
Common myth
"All yogurt is a good source of probiotics." In reality: Only yogurt that still contains live and active cultures at the time it's eaten delivers probiotic bacteria; some yogurts are heat-treated after fermentation, which kills the cultures, and the standard starter strains required for yogurt aren't automatically the same as probiotic strains with documented health effects.
Recipes that use it
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