Feta cheese is not bad for you in moderate amounts. At 75 calories and 6 grams of fat per ounce, it’s one of the lower-calorie cheeses you can buy, and it delivers a solid nutritional profile that includes protein, calcium, and beneficial bacteria. The real considerations are its sodium content and saturated fat, which matter most if you’re eating it in large quantities or managing specific health conditions.
How Feta Compares Nutritionally
A one-ounce serving of feta (about the size of a pair of dice) contains 75 calories, 6 grams of fat, 4 grams of saturated fat, 4 grams of protein, and roughly 140 milligrams of calcium. That calorie count puts it well below most popular cheeses: cheddar comes in at 115 calories per ounce, Swiss at 111, Parmesan at 111, and even whole milk mozzarella at 85. Only cottage cheese and ricotta are meaningfully lower.
Feta’s strong, salty flavor also works in your favor here. Because it tastes so assertive, you typically use less of it. A small crumble over a salad or roasted vegetables goes further than a thick slice of cheddar on a sandwich, which naturally keeps your portion size smaller.
The Sodium Issue
Sodium is feta’s biggest nutritional drawback. One ounce contains 260 milligrams, which is higher than cheddar (185 mg), mozzarella (178 mg), Swiss (53 mg), and goat cheese (130 mg). It’s not the saltiest cheese on the shelf, though. Processed American cheese packs 468 mg per ounce, Parmesan has 390 mg, and blue cheese has 325 mg.
If you’re watching your blood pressure or limiting sodium intake, that 260 mg per ounce adds up quickly in a generous salad. One practical trick: rinse your feta under water before eating it. Because feta is stored in brine, a quick rinse removes a meaningful amount of surface salt without washing away the flavor entirely. You can also look for reduced-sodium versions, which some brands now produce.
Calcium and Bone Health
Feta is a genuinely good source of calcium, providing about 140 mg per ounce. That’s roughly 14% of what most adults need daily, packed into a very small serving. It also contains about 96 mg of phosphorus per ounce, and the two minerals work together to build and maintain bone density. For people who struggle to get enough calcium from milk (whether due to taste preference or mild lactose sensitivity), adding feta to meals is a practical alternative.
Easier to Digest Than Most Dairy
Traditional feta is made from sheep’s milk, or a blend of sheep’s and goat’s milk, and it contains only about 1 to 2 grams of lactose per 100 grams. That’s considerably less than fresh milk (which has around 5 grams per 100 ml) and puts feta in the “low lactose” category. The fermentation and aging process breaks down much of the lactose naturally. Many people with mild lactose sensitivity can eat feta without symptoms, though it is not completely lactose-free.
Gut-Friendly Bacteria
Traditionally made feta contains live bacterial cultures that can benefit your gut. Research on artisanal Greek feta has identified several strains of lactic acid bacteria in the finished cheese, including varieties from the Lactobacillus, Lactococcus, and Leuconostoc families. These are the same broad groups you’d find in probiotic supplements and fermented foods like yogurt and kimchi.
There’s an important caveat: not all feta on grocery shelves retains these live cultures. Mass-produced feta may be heat-treated in ways that kill off beneficial bacteria. If probiotic content matters to you, look for feta labeled as traditionally made or containing “live active cultures.” Feta imported from Greece, where production methods are regulated under Protected Designation of Origin rules, is more likely to preserve these bacteria.
A Useful Fat for Body Composition
Feta made from sheep’s and goat’s milk naturally contains conjugated linoleic acid, a type of fat found in the milk of ruminant animals. CLA has been studied for its effects on body composition, and research shows it can reduce body fat mass, lower body fat percentage, and support lean muscle retention. The effect is most pronounced when combined with calorie control and moderate exercise.
The concentration of CLA in cheese ranges from about 3.6 to 5.9 milligrams per gram of fat. That said, the amounts linked to measurable weight loss benefits in studies are 3 to 6 grams per day, far more than you’d get from a normal serving of feta. So while the CLA in feta is a small bonus, it’s not a reason to eat large quantities of it.
Saturated Fat in Context
With 4 grams of saturated fat per ounce, feta is not a low-saturated-fat food. Current dietary guidelines recommend keeping saturated fat under 10% of your total daily calories, which works out to about 22 grams on a 2,000-calorie diet. A one-ounce serving of feta uses up roughly 18% of that budget. If feta is the main source of saturated fat in a given meal, that’s easily manageable. If you’re also eating red meat, butter, and other full-fat dairy, the numbers stack up faster.
Who Should Be Careful
Feta contains tyramine and other biogenic amines that form during aging. These compounds can trigger headaches or migraine episodes in sensitive individuals. The levels in feta tend to stay relatively low because its high salt content and low pH slow down the chemical reactions that produce these amines. One study found total biogenic amine levels of 330 mg per kilogram after standard 60-day aging, rising to 617 mg/kg after 120 days of storage. Both figures stay well under the 900 mg/kg threshold that food safety researchers have proposed as an upper limit. Still, if you notice a pattern of headaches after eating aged cheeses, feta may be a contributor.
Pregnant women should only eat feta made from pasteurized milk. Unpasteurized feta can carry Listeria, a bacterium that poses serious risks during pregnancy. The FDA advises avoiding any cheese made with raw milk during pregnancy. Most feta sold in U.S. grocery stores is pasteurized, but check the label, especially with imported varieties or cheese from farmers’ markets.
How Much Is Reasonable
For most people, one to two ounces of feta per day fits comfortably into a balanced diet. That gives you 150 calories or less, a meaningful dose of calcium and protein, and keeps sodium around 260 to 520 mg, a manageable range if the rest of your meals aren’t heavily salted. Feta works best as a flavor accent rather than a main ingredient: crumbled over grain bowls, tossed into salads, stuffed into peppers, or paired with watermelon and fresh herbs. Used that way, it adds richness and nutrition without the caloric load of heavier cheeses.