Are you eating “healthy” but you’re still not losing weight?

According to Foxnews.com, more than likely it’s because you’re misinformed about what healthy food really is.

Nutritionist and dietician Tanya Zuckerbrot, the author of the F-Factor Diet, said some of the food choices people make are the wrong ones, and that people really don’t know what’s good for them and what’s not.

Zuckerbrot offers a list of 10 healthy foods that really aren’t:

Olive oil: Zuckerbrot says while it’s a “heart-healthy” monounsaturated oil, it’s also rich in calories and fat. She said you’re better off using a pat of butter for your bread than dipping it in olive oil because the bread sops up the oil like a sponge.

Tuna fish: The average overstuffed tuna sandwich served in a restaurant contains 700 calories and 43 grams of fat, Zuckerbrot says. What’s the culprit? The mayo, she says. Tuna fish has just 35 calories per ounce and it’s full of omega-3s, but mayonnaise has 100 calories per tablespoon. Zuckerbrot says you’re better off having a turkey or roast beef sandwich.

Granola: Believe it or not, granola is actually quite fattening. Zuckerbrot says it’s because granola cereals often contain oils, including coconut oil, sugar, nuts and other high calorie foods.

Organic food: Organic food is marketed as being preservative and pesticide free, but it’s most definitely not calorie-free, Zuckerbrot says.

Sushi: While tuna sashimi is very healthy, a California roll or tempura roll are not, Zuckerbrot warns.  Japanese food is inherently healthy, but the problems start when the recipe is Americanized with ingredients like cheese and avocado, she says.

Pizza: Zuckerbrot says while mozzarella cheese is a good source of calcium, it’s also high in calories. A traditional slice of pizza has between 300 and 400 calories, she says. Instead, she recommends eating just one slice of pizza and getting a salad or cup of minestrone soup on the side to save on calories.

Frozen diet meals: While frozen entrees are fairly low in calories and convenient, they’re also highly processed and high in sodium.  Zuckerbrot says most of these meals have more than 600 milligrams of sodium, not to mention small portions that aren’t really satisfying. She says you’re better off eating a slice of whole wheat bread with some light sauce and light mozzarella or an egg white omelet with some vegetables.

Protein bars: Basically glorified candy bars that are high in calories and fat, Zuckerbrot says. Instead, hit the salad bar, and grab lots of lettuce, artichokes and broccoli, then top it off with plain balsamic vinegar. For 100 to 200 calories, you get a lot more for a lot less calories, she says.

Pretzels: They’re low in fat and low on nutrition, and are basically empty calories, Zuckerbrot warns. She says pretzels are basically all sugar so they’ll make you hungrier and you’ll gain weight as a result of over-eating.

Fat-free/sugar-free muffins:  No matter what the packaging says, these foods will usually have around 600 calories, Zuckerbrot says, and are nothing but cake in disguise.