Cheese is one of the most nutrient-dense foods available, packing meaningful amounts of protein, calcium, phosphorus, vitamin B12, vitamin A, zinc, and vitamin K2 into a small serving. A single ounce of hard cheese like cheddar delivers about 7 grams of protein and 180 mg of calcium, along with a surprisingly broad range of minerals and vitamins that vary depending on the type of cheese and how it’s made.
Protein and Fat
One ounce of cheddar cheese contains roughly 7 grams of protein and 9.4 grams of total fat, about 6 grams of which is saturated fat. That protein-to-weight ratio makes cheese comparable to many meats on a per-calorie basis. Softer cheeses shift this balance: a half-cup of full-fat cottage cheese has about 14 grams of protein with only 3 grams of saturated fat, making it one of the leanest options in the cheese aisle.
The fat content in cheese isn’t just a calorie source. Cheese from pasture-fed animals contains higher levels of a naturally occurring fat called conjugated linoleic acid. In ewe’s milk cheese, for example, CLA concentrations nearly doubled during spring grazing season compared to winter hay feeding. The type of cheese matters less than what the animals ate, so grass-fed and pasture-raised labels are worth paying attention to if this nutrient interests you.
Calcium and How Well You Absorb It
Cheese is one of the best practical sources of calcium, and not just because of the raw numbers. A 30-gram serving of cheddar contains about 240 mg of calcium, with an absorption rate of roughly 32%. That means your body actually takes in about 77 mg from that serving. Compare this to cooked spinach: a full cup contains a similar 243 mg of calcium on paper, but only 5% gets absorbed, leaving you with just 12 mg. Even calcium-fortified soy milk, with 300 mg per cup, has a lower absorption rate of 21%, delivering about 63 mg.
This gap matters if you’re relying on non-dairy sources to meet your calcium needs. Cheese’s calcium comes bound in a matrix of protein and phosphorus that your gut handles efficiently, which is one reason dairy remains the default recommendation for bone health.
Zinc
Hard cheeses are a solid source of zinc, a mineral involved in immune function and wound healing. Swiss cheese and Parmesan top the list at 1.2 mg per ounce, covering about 11% of the daily value. Gouda, Gruyere, and Edam follow closely at 1.1 mg per ounce. Cheddar, fontina, and Tilsit provide about 1 mg, while softer options like provolone, Colby, and Monterey Jack come in slightly lower at 0.9 mg. A couple of ounces of hard cheese with a meal can meaningfully contribute to your daily zinc intake.
Vitamin K2: A Less Obvious Nutrient
Most people associate vitamin K with leafy greens, but that’s vitamin K1. Cheese is one of the few common dietary sources of vitamin K2, a group of compounds that help direct calcium into bones rather than arteries. The amount varies dramatically by cheese type. Blue cheese (Danablu) contains the highest levels, roughly 476 nanograms per gram in long-ripened versions. Aged cheddar and semi-hard cheeses like Gouda and Tistrup fall in the middle range, while brie has comparatively little.
Interestingly, your body doesn’t absorb K2 equally from all cheeses. Blue cheese ripened for 8 months showed the highest bioavailability, with 58 to 80% of certain K2 forms making it into circulation. Some harder aged cheeses had bioavailability below 10% for the same compounds. If K2 is your goal, blue cheese and softer fermented varieties give you more bang per bite.
B Vitamins and Vitamin A
Cheese provides vitamin B12, which is essential for nerve function and red blood cell production. This makes it a valuable B12 source for vegetarians who don’t eat meat or fish. Cheese also supplies vitamin A, primarily as the preformed retinol type that your body can use directly without needing to convert it from plant-based precursors. Both of these come from the milk fat, so reduced-fat cheeses deliver proportionally less.
Sodium Levels Vary Widely
Sodium is the nutrient in cheese most worth watching, and the range between varieties is enormous. Swiss cheese contains just 53 mg of sodium per ounce, making it one of the lowest-sodium options. Feta jumps to 260 mg per ounce. Cottage cheese is deceptively high at 459 mg per ounce, largely because of the salt added during processing. If you’re managing blood pressure or sodium intake, Swiss, fresh mozzarella, and ricotta tend to be the gentlest choices, while processed cheeses and brined varieties like feta sit at the high end.
Lactose: Aged Cheese Is Nearly Free of It
During cheesemaking, bacteria consume lactose as fuel for fermentation. The longer a cheese ages, the less lactose remains. Hard, aged cheeses have almost none: a 40-gram serving of Parmesan contains 0.0 grams of lactose, and cheddar has just 0.04 grams. Brie, camembert, and feta also contain near-zero amounts. Fresh, unripened cheeses retain more. A 120-gram serving of ricotta still has about 2.4 grams of lactose. If you’re lactose intolerant, aged hard cheeses are generally well tolerated, while ricotta, cream cheese, and other fresh varieties may still cause symptoms.
Probiotics in Aged Varieties
Some cheeses double as a source of live beneficial bacteria. Unlike yogurt, which passes through the stomach quickly, cheese’s dense matrix may actually protect probiotic organisms from stomach acid during digestion. Cheddar and Gouda have both been shown to support the survival of probiotic bacteria, particularly strains of lactobacilli and bifidobacteria. Not all cheese contains live cultures (heat-treated and processed varieties do not), so look for labels that say “contains live and active cultures” or choose traditionally made aged cheeses.
How Milk Source Changes the Nutrition
The animal behind the milk matters more than most people realize. Sheep’s milk cheese is the most nutrient-dense option, containing roughly 5.4 grams of protein per 100 grams of milk compared to 3.2 for cow and 3.1 for goat. Sheep’s milk also contains about 36% more calcium than cow’s milk and 31% more than goat’s milk, along with higher levels of iron, magnesium, zinc, folate, B6, B12, riboflavin, and vitamin D. Cheeses like Pecorino Romano, Roquefort, and Manchego are all made from sheep’s milk. Goat cheese tends to be slightly easier to digest for some people due to differences in its fat and protein structure, though its overall mineral content is similar to cow’s milk cheese.