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Portion Sizes

By , About.com Guide

Updated February 12, 2012

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 Portion Sizes

Read nutrition fact labels to find the serving size of packaged foods.

Catherine dée Auvil
Fast food restaurants serve super-sized meals for just a few cents extra, and regular sit-down restaurants serve portions that are just too big for most people. These large portions can sneak into your home too. Like when you eat a whole bag of potato chips or down a full 20-ounce bottle of soda.

The problem with this portion distortion is that people have the tendency to eat whatever is in front of them. So if there's a large portion in front of you, you're probably going to eat it. Doing is too often leads to extra unwanted pounds. Even healthy foods can contribute too many calories when you eat too much of them.

Portions Verses Servings

Although many people use these words interchangeably, portion and serving are not always the same. A portion is any amount of a certain food you choose to put on your plate, while a serving is a recommended amount of food based on health and nutrition guides like the United States Department of Agriculture's ChooseMyPlate.gov. This can cause a lot of confusion and consumption of extra calories, especially when you eat energy-dense foods and high calorie snacks.

Let me give you an example. According to the Department of Agriculture, one serving from the grain and cereal group is equal to one ounce. That's not much; one ounce of cooked white rice is only about one-half cup. The portion of rice you put on your plate may be much bigger, so you may think you're only eating one serving of rice when you're really eating two or three. That matters because and each half-cup of rice adds about 100 calories to your meal. You can see how the calories can add up quickly.

Portion Control Tips

First you need to become familiar with serving sizes for the foods you eat every day. Packaged foods always show the serving size information on the Nutrient Facts labels, usually in ounces or in common kitchen measurements. You can also use an inexpensive kitchen scale, measuring cups and measuring spoons to measure your portions of foods at home until you feel comfortable estimating serving sizes without them.

Foods like meats and fresh produce may not have Nutrient Facts labels, so you need to know that one serving of meat, poultry or fish is about three ounces (about the size of a deck of cards). One serving of a fruit or vegetable is usually one piece of the produce; one cup chopped or sliced fruit or vegetable; or 3/4 cup of juice. A serving of cheese is one and one-half ounce, which is the size of a pair of dice. Once you get comfortable with understanding serving sizes, you can use that information to track your calories accurately in a food diary or on a diet website like Calorie Count.

Want to cut calories? Here are a few tips for controlling your portion sizes.

  • If you eat at a restaurant, ask for a container and take half of your meal home, or split your meal with your dining partner.
  • If you like to snack while watching TV, measure out one serving of your snack - don't take a whole bag of chips with you into your TV room.
  • Serve dinner by the plate, rather than family style (serving dishes on the table), you'll be less tempted to load up on second servings if they're not right in front of you.
  • Start your meal with a clear soup or green salad to ease your hunger a bit so that you aren't as likely to over eat.
If cutting calories leaves you feeling hungry, add extra servings of nutrient-dense vegetables like carrots, green beans and celery. While one-half cup of rice or pasta has about 100 calories, one-half cup of green beans has only 14 calories.

Sources:

US Centers for Disease Control and Prevention. "How to Avoid Portion Size Pitfalls to Help Manage Your Weight". Accessed October 19, 2009. ttp://www.cdc.gov/healthyweight/healthy_eating/portion_size.html.

United States Department of Agriculture. "Choose My Plate." Accessed October 7, 2011. http://www.choosemyplate.gov/.

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