Do you think you are doing a good job of sticking to your healthy diet? You might be. But chances are good that you are eating too much of certain foods. Almost everyone makes portion size mistakes, especially when they are trying to lose weight. These are the foods that dieters often overeat.

Avoid 9 Common Portion Size Mistakes

Cereal. When is the last time you measured your cereal before pouring it into a bowl? Have you ever checked the Nutrition Facts label to determine the correct serving size? For some cereals, one cup is the recommended serving size.

But the American Diabetes Association lists ¾ cup as a suggested serving. If you pour your cereal straight into the bowl, chances are good you are eating up to 2 servings. And if you refill the bowl (as most of us do!) you may be eating 3-4 servings.  Quick Fix: Learn Make a Healthier Breakfast

Chicken Breast. Lean protein is healthy, right? Not if you eat too much of it. If you are eating a whole chicken breast for dinner, you might be eating too much. A serving of chicken is 3-4 ounces, about the size of a deck of playing cards. Some people use the palm of their hand as a guide. Depending on the vendor, some chicken breasts are twice or even three times the size of a recommended serving.  The calories in chicken breast can add up and ruin your diet. Quick Fix: Learn to Eat the Right Amount of Protein

Hamburger. If you are counting your hamburger as one serving of beef, you are probably underestimating the calories you’ve consumed. A quarter pound burger (4 ounces) is slightly larger than the recommended serving size of 3 ounces. But many burgers, especially those served at restaurants, are 1/3 to 1/2 pound. You might be eating twice as many calories as you think you are.
Quick Fix: Make Better Protein Choices to Lose Weight

Coffee Creamer. Your morning cup of java might be the most fattening thing you consume all day if you add flavored creamer. And you’re not off the hook if you use the fat-free variety. A single serving of liquid creamer is one tablespoon. Do you pull out the measuring spoons when you add cream to your coffee? Probably not. If you are drinking more than the recommended serving (remember to count each cup of coffee!) then the negligible fat in the “fat-free” creamer starts to add up quickly.
Quick Fix: Learn to Make Low Calorie Coffee Drinks at Home

Cooking Spray. You might skip the oil or butter when cook healthy meals at home. This is good! But you might be neglecting to account for the calories in your cooking spray. If you use PAM to avoid adding calories to your food you might want to know that a single serving of the spray is 1/3 of one second. Do you keep a stopwatch in your kitchen? It’s not likely that you do. The Center for Science in the Public Interest evaluated the spray and reported that a more typical six-second spray would have 50 calories and 6 grams of fat.
Quick Fix: Use Healthy Methods to Cut Fat When You Cook

Bread. If you pack yourself a healthy lunch with a lean meat sandwich, congratulations! You are probably saving yourself from the belly-busting caloriefest that you’d experience if you went to a restaurant. But did you accurately record the calories in your whole grain bread? If you think your sandwich equals one serving, think again. For many bread products, including Pepperidge Farm Soft Honey Whole Wheat Bread, a single serving is only one slice of bread.
Quick Fix: Make a Healthier Lunch (tips and recipes)

Fruit. A healthy serving of fresh fruit is a great alternative to a high fat dessert. But if you are counting your calories or watching your sugar intake you need to monitor how much you are eating. Take grapes for example. If you sit down with a bowl of grapes, you might add one serving of grapes to your food diary. Wrong! A single (cup) serving of grapes is only 16 grapes. Get out your calculator before you start chomping.
Quick Fix: Reduce Your Sugar Intake to Lose Weight

Soda. Sugary drinks are one of the easiest things to overconsume. We often put them next to us and mindlessly sip away. But the calories in soda add up, even if you only drink one a day! And for many reasons, diet soda is not a good alternative. A serving size of Coke is 12 ounces. But most of us drink plenty more than that when we fill up at the soda fountain. A 7-11 Double Gulp contains 50 ounces and 575 calories.
Quick Fix: Learn to Make Flavored Water to Reduce Snack Cravings

Salad Dressing. A healthy salad is a great alternative a high starch, high fat meal. But the salad dressing can add calories that could make any prudent calorie counter blush. By some estimates, many restaurant salads contain over 500 calories, most often due to the fatty dressing. A serving size of salad dressing is 2 tablespoons. If you order your dressing on the side, your waiter will probably bring you much more than that.
Quick Fix: Healthy Salad Dos and Don’ts

The Simple Trick Used by Smart Dieters

No matter what kind of food you are eating, serving size matters. Even if you are eating a “healthy” food, your portion size should match the recommended serving size provided on the Nutrition Facts label. This simple step will save you from calorie-counting mistakes and will help you to reduce your food intake overall.

You should also measure portions in your kitchen with tools like a measuring cup, measuring spoons or (my favorite) a digital scale. Then record the foods accurately with a calorie counting app, like the one at The tool allows you to customize your portion when you add each food. You may be surprised how just measuring your food makes a big difference in your food intake and probably in the way your clothes fit.

About the writer – Written or reviewed by a board-certified physician. See’s Medical Review Board. Malia Frey has been teaching weight loss, health, wellness, diet and exercise for over 20 years. Her passion for good health inspires her to stay active, eat well (most of the time) and encourage others to do the same. Connect with Malia on Facebook, on Pinterest or Twitter, visit her website,, or connect with her on Google.


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