Cottage cheese is the healthiest cheese by most standard nutritional measures, with the highest protein density and lowest fat content of any common variety. A one-ounce serving of low-fat cottage cheese delivers 14 grams of protein for just 81 calories and 1 gram of fat. But “healthiest” depends on what you’re optimizing for. If you want bone-building nutrients, gut-friendly bacteria, or a low-sodium option, a different cheese might be the better pick.
Best Cheeses by Protein and Calories
If your goal is getting the most protein per calorie, two cheeses stand far above the rest: cottage cheese and parmesan. Low-fat cottage cheese packs 14 grams of protein into an ounce at just 81 calories. Hard parmesan delivers about 10 grams of protein per ounce, and because it has such an intense flavor, a little goes a long way. Grated parmesan is slightly lower at around 8.5 grams per ounce, but it’s still one of the most protein-dense cheeses you can buy.
Part-skim mozzarella and string cheese both land around 7 grams of protein per ounce at roughly 80 to 84 calories. These are solid everyday options, especially for snacking. Feta and soft goat cheese sit lower on the protein scale (4 to 5 grams per ounce) but are also among the lowest-calorie cheeses at 75 calories per ounce.
How Cheese Affects Heart Health
Cheese is high in saturated fat, which traditionally put it on the “eat less” list for heart health. But large-scale studies have complicated that picture. In a study of patients with stable heart disease published in the European Journal of Preventive Cardiology, higher cheese intake was associated with a lower risk of heart attack (about 8% lower per 10-gram increase in daily intake), while butter intake was linked to a 10% higher risk of heart attack and a 10% higher risk of death from any cause.
The leading explanation is something researchers call the “dairy matrix.” Cheese isn’t just a block of saturated fat. It contains calcium, protein, probiotics, and intact milk fat globule membranes, structures that surround the fat droplets and may change how your body absorbs and processes that fat. Butter loses these membranes during processing. This may explain why cheese and butter, despite both being dairy fat, appear to have different effects on the cardiovascular system. The practical takeaway: cheese in moderate amounts doesn’t carry the same heart risk that its saturated fat content might suggest on paper.
Cheese and Blood Sugar
Cheese consumption is linked to a reduced risk of type 2 diabetes. A review of the evidence found moderate-quality support for cheese lowering diabetes and stroke risk, with two of three major studies finding a significantly reduced risk. In animal research, both low-fat and regular-fat cheeses improved insulin sensitivity in rats fed a high-fat diet, without any difference between the two types. Neither version affected body weight. The mechanism appears to involve changes in how the body metabolizes certain fats, specifically phospholipids that get disrupted by high-fat eating patterns. Both low-fat and full-fat cheese seemed to normalize these disruptions.
Best Cheeses for Bone Health
All cheese provides calcium, but some varieties also deliver vitamin K2, a nutrient that helps direct calcium into your bones rather than your arteries. Swiss-style cheeses are especially rich in K2. Raclette contains the highest levels (465 micrograms per kilogram), followed closely by Vacherin Fribourgeois (456 micrograms per kilogram) and Emmentaler (280 micrograms per kilogram). These are all semi-hard to hard Alpine cheeses with characteristic holes or a washed rind. If bone density is a priority, these varieties pull double duty by providing both calcium and the vitamin that helps your body use it.
Best Cheeses for Gut Health
Aged and traditionally fermented cheeses can contain live probiotic bacteria, similar to what you’d find in yogurt. Research on traditional Italian cheeses like Pecorino Siciliano has identified strains of beneficial bacteria that performed better in lab tests than the well-known probiotic strain found in many supplements. These bacteria survive the acidic environment of the stomach and colonize the gut. The key is that the cheese needs to be made from raw or minimally processed milk and aged naturally. Highly processed cheeses and those made with pasteurized milk at high temperatures tend to have fewer live cultures. Aged Gouda, traditional cheddar, and Swiss-type cheeses are commonly cited as good sources of probiotics, though the exact strains and amounts vary by producer.
Lowest Sodium Options
Sodium is where many otherwise healthy cheeses fall short. Feta, blue cheese, and processed cheese can contain 300 to 400 milligrams of sodium per ounce, which adds up fast if you’re watching your blood pressure. The lowest-sodium cheeses are mountain-style varieties. Swiss, Gruyère, and fresh goat cheese (chèvre) contain just 50 to 95 milligrams of sodium per ounce. Fresh mozzarella and ricotta also tend to be on the lower end. If you eat cheese daily, choosing a low-sodium variety can save you hundreds of milligrams over the course of a week.
Best Cheeses if You’re Lactose Intolerant
Aging breaks down lactose. Hard, aged cheeses contain so little lactose that most people with lactose intolerance can eat them without any symptoms. Parmesan contains essentially zero lactose in a standard 40-gram serving. Cheddar and Swiss-style cheese each contain just 0.04 grams per 40-gram serving, a trace amount that’s biologically negligible. The longer a cheese has been aged, the less lactose remains. Soft, fresh cheeses like ricotta, cream cheese, and fresh mozzarella retain more lactose and are more likely to cause digestive trouble.
How Much Cheese to Eat Daily
The Dietary Guidelines for Americans recommend 3 cup-equivalents of dairy per day for adults on a 2,000-calorie diet. One cup-equivalent of cheese is 1.5 ounces of natural cheese (like cheddar, Swiss, or mozzarella) or 2 ounces of processed cheese. So if cheese is your primary dairy source, about 1.5 ounces counts as one of your three daily servings. That’s roughly the size of a pair of dice for hard cheese, or a third of a cup for cottage cheese.
The guidelines specifically recommend fat-free or low-fat dairy, though the research on full-fat cheese and metabolic health suggests the distinction may matter less for cheese than it does for milk or cream. If you’re choosing between low-fat and regular cheese purely for heart or diabetes risk, the current evidence doesn’t show a clear advantage to either one.
Ranking the Healthiest Cheeses Overall
No single cheese wins in every category. Here’s how the top options stack up based on what matters most to you:
- Best overall: Low-fat cottage cheese, for its unmatched protein-to-calorie ratio and versatility
- Best for flavor with minimal portions: Parmesan, with 10 grams of protein per ounce, zero lactose, and enough intensity that a small amount satisfies
- Best for bone health: Emmentaler or Raclette, for their combination of calcium and high vitamin K2
- Best low-sodium option: Swiss or fresh goat cheese, at 50 to 95 milligrams per ounce
- Best for gut health: Traditionally aged varieties like Gouda or Pecorino, made with raw milk
- Best for lactose intolerance: Parmesan, cheddar, or Swiss, all with near-zero lactose
The healthiest cheese is ultimately the one that fits your specific nutritional priorities and that you’ll actually enjoy eating consistently. A cheese you eat in reasonable amounts several times a week does more for your health than a “perfect” option that sits untouched in your fridge.