Greek yogurt has more protein and less sugar than regular yogurt, but regular yogurt delivers significantly more calcium. Neither is objectively “better.” The right choice depends on what you’re trying to get out of your yogurt.
How Greek Yogurt Is Made
Greek yogurt starts as regular yogurt. The difference is an extra straining step that removes most of the liquid whey, a yellowish fluid that carries water, sugar, and some minerals with it. Traditional Greek-style straining takes 10 to 12 hours, and by the end, the yogurt has lost a substantial portion of its volume. What remains is thicker, more concentrated in protein, and lower in sugar. It also loses some nutrients that dissolve in whey, which is why the nutritional profiles diverge so sharply.
Protein and Carbohydrates
The protein gap is the headline difference. A 6-ounce serving of Greek yogurt contains 15 to 20 grams of protein, compared to about 9 grams in the same amount of regular yogurt. That’s roughly double the protein for a similar calorie count.
Carbohydrates go in the opposite direction. Greek yogurt has 5 to 8 grams of carbs per 6-ounce serving, while regular yogurt has 13 to 17 grams. Much of that carbohydrate difference comes from sugar: a 200-gram serving of low-fat Greek yogurt contains about 7 grams of sugar versus 14 grams in regular yogurt. This is all lactose, the naturally occurring sugar in milk, not added sweetener (assuming you’re buying plain). The straining process physically removes lactose along with the whey.
Where Regular Yogurt Wins: Calcium
Calcium is the one nutrient where regular yogurt has a clear, substantial advantage. A 6-ounce serving of regular yogurt provides about 311 milligrams of calcium, while the same serving of Greek yogurt delivers only 187 to 196 milligrams. That’s roughly 40% less calcium in the Greek version. Calcium dissolves in whey, so it gets strained out during production.
If you’re eating yogurt partly for bone health or you’re trying to hit your daily calcium target (around 1,000 mg for most adults), regular yogurt gets you there faster. One serving of regular yogurt covers about a third of your daily needs, while Greek yogurt covers closer to a fifth.
Hunger and Fullness
Greek yogurt’s higher protein content has a practical effect on appetite. A study published in the journal Appetite tested 160-calorie yogurt snacks with varying protein levels (5, 14, and 24 grams) in healthy women. All the yogurt snacks reduced afternoon hunger for up to two hours compared to eating nothing. But the high-protein version, containing 24 grams of protein (similar to Greek yogurt), kept hunger lower at multiple time points than the low-protein version and also delayed the next time participants chose to eat.
This matters if you’re using yogurt as a snack to bridge the gap between meals. The extra protein in Greek yogurt makes it more likely to hold you over, which can help with overall calorie control without any deliberate restriction.
Lactose Tolerance
If dairy gives you digestive trouble, Greek yogurt is often easier to handle. The straining process removes a significant portion of the lactose. With roughly half the sugar of regular yogurt (and most of that sugar being lactose), Greek yogurt puts less of the problematic sugar into your gut per serving. It’s not lactose-free, so people with severe intolerance may still react, but many people with mild sensitivity find they can eat Greek yogurt comfortably.
Both types of yogurt also contain live bacterial cultures that help break down lactose during digestion, which is why yogurt in general is better tolerated than milk by lactose-sensitive people.
Probiotics
Both Greek and regular yogurt are made with the same starter cultures, typically Lactobacillus bulgaricus and Streptococcus thermophilus. Some brands add extra strains for additional probiotic benefit. The straining process doesn’t appear to eliminate live cultures from Greek yogurt, so both types can serve as sources of beneficial bacteria. The specific strains and amounts vary more by brand than by yogurt type, so checking labels matters more than choosing Greek over regular if gut health is your priority.
Texture and Cooking
Greek yogurt’s thick, creamy texture makes it a useful substitute for sour cream, mayonnaise, or cream cheese in recipes. It holds up well in dips, dressings, and marinades without adding excess liquid. Regular yogurt is thinner and pours more easily, making it better for smoothies, overnight oats, or any recipe where you want a looser consistency. In baking, regular yogurt blends into batter more evenly, while Greek yogurt can make baked goods denser and more moist.
Which One to Choose
Choose Greek yogurt if you want more protein per serving, less sugar, better appetite control between meals, or a thick texture for cooking. Choose regular yogurt if you’re focused on calcium intake, prefer a lighter texture, or want a more affordable option (Greek yogurt typically costs more because it requires more milk to produce the same volume).
For either type, plain versions are the better nutritional choice. Flavored yogurts, whether Greek or regular, can contain 15 to 25 grams of added sugar per serving, which erases much of the nutritional advantage of either variety. If plain tastes too tart, mixing in fresh fruit or a small drizzle of honey gives you control over how much sweetness you’re actually adding.