We know that some of our favorite foods are not exactly good for us, but we often wonder: which ones are really, really bad ? We spoke to Christine Gerbstadt, MD, RD, a spokesperson for the American Dietetic Association, to find out which foods to leave off your plate.

BREAKFAST
Greek yogurt. It’s super popular right now, but some brands can have more than half of your recommended daily allowance (RDA) of fat! Gerbstadt says there are enough benefits in Greek yogurt that you don’t have to pass on it completely, but you should be sure to check the calories and fat content. “Some have cream added,” Gerbstadt says. She notes that while some Greek yogurts may be higher in calories (with well over 200 per serving), many actually have less sugar than lower-calorie yogurts. “A lot of these flavors don’t have a lot of sugar added, unlike those that have that sort of jam on the bottom.” Gerbstadt suggests trying low-fat or fat-free yogurts if you’re looking for great flavors with fewer calories. But if you’d rather avoid the sugar substitutes that are in those yogurts, consider buying plain yogurt and adding fresh fruit.

Read Can a Plate Help You Lose Weight

LUNCH
Cheeseburger and French fries. It’s a classic American pairing, but it’s also likely to give you nearly 60% of your RDA of fat. If it’s too tough to give up altogether, make this meal at home. Use 96% fat-free ground beef and switch the sesame bun for whole wheat. Gerbstadt also recommends no-fry French fries. Start by slicing up a potato – use thick wedges for steak fries or thinner slices for pommes frites. “I brush the [cookie sheet] with olive oil and add a little bit of chopped onion or seasonings,” Gerbstadt says. Pop them in the oven for 20-30 minutes (or until they reach the consistency you prefer) and you have a healthy alternative to the fast-food favorite. We promise you, they’re at least as good as (if not better than) the originals.