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Serving Size vs. Portion Size

Updated on December 26, 2011

The top reason people weigh more than they should is that they eat too much for their size and activity level. We hear about portion control and serving sizes, but what's the difference? And how do we use that information to maintain or lose weight?

Reasonable portions help maintain or lose weight.
Reasonable portions help maintain or lose weight.

Serving Sizes

Serving sizes are listed on labels of packaged goods along with other nutritional information. In fact if you count calories, the number of calories listed is for that specific serving size. Learning to check serving sizes can help you rein in your eating as it makes you more aware of how much you eat over the recommended amount. Learning what constitutes a serving is a good starting point for making adjustments to food portions.

For instance, if you plan to have a bowl of cereal, you may be surprised at a serving size. You'll have to check labels for individual products, but in general a serving size is around ½ to ¾ cup. I don't know about you, but my cereal bowls hold twice, if not four times that amount.

Another good example that provides perspective is ice cream. If you need to lose weight, you may want to blame things like ice cream for your expanded waistline, but the problem isn't the ice cream as much as it is how much ice cream you're eating. A serving size of ice cream again differs from one brand and flavor to another, but is traditionally ½ cup. So if the ice cream is 150 calories for a ½ cup serving and you eat a small bowl of ice cream you can easily be eating 600 calories rather than 150.

Portion Control 101

Overview of Portion Sizes

Now that you have a better idea of serving sizes, it leads to a new question. How many servings equal a portion? The problem is that some people confuse servings and portions. The easiest way to remember the difference is that portions are how much you actually put on your plate. Servings sizes can help you learn to eat more reasonable portions, but the amount you put on the plate or bowl equal your portion size.

For example, let's go back to the ice cream example. You may only eat one bowl of ice cream. That's one portion, but that portion may equal 4-6 servings. When portion sizes add up to more than you your body needs or burns, you gain weight.

There is no standard across-the-board answer for portion sizes because how much you should eat will depend on a number of factors including your current weight, height, activity level and age. People who are more active or have more lean muscle need to eat more than those who are inactive or have more fat than muscle. However, this rule of thumb can help guide you as you learn to eat less:

  • Meat: A portion of meat should be about the size of your palm. This varies from one person to the next, but can work as a good guide to help keep portion sizes in check.
  • Starches: A portion of starches like rice, whole grains, potatoes or bread should be the size of your fist.
  • Vegetables: To help eat enough vegetables, fill half your plate with vegetables.

Use Serving Size to Reduce Portions

Serving sizes can be used as a tool to guide you to more reasonable portions. We have to retrain our thinking as portion sizes have increased substantially over the last 40 years along with an increase in obesity, overweight and related diseases. When the first McDonalds opened, the average adult ordered the equivalent to a Happy Meal. Now we have bigger burgers, bigger fries, bigger drinks and we supersize them!

While you may not want to measure the food you eat, until you get a better understanding of reasonable portions, a digital scale can help train you to eat less and still be satisfied. Once you've measured out your portions, eat slowly, chew thoroughly and take time to enjoy because there's no going back for seconds.

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    • musclequest profile image

      musclequest 5 years ago from Johannesburg,South Africa

      A really helpful hub,serving sizes and portion size is defnitely important,...i often over indulged and found that I sometimes ate 4 times the serving size...voted up and useful

    • Rev. Akins profile image

      Rev. Akins 5 years ago from Tucson, AZ

      Nice hub and something many people don't realize. There are many foods in the store where it looks like they have few calories until you read how small the serving size in. Thanks for the hub! Very helpful and something many could learn from.

    • Donna Sundblad profile image
      Author

      Donna Sundblad 5 years ago from Georgia

      Thanks for the vote up musclequest!

    • Donna Sundblad profile image
      Author

      Donna Sundblad 5 years ago from Georgia

      Thanks for reading and taking time to leave a comment Rev. Akins. I actually talked to someone a couple of weeks ago who said they had no idea how to figure out how many calories were in a food. I'm afraid the same may be true with serving sizes.

    • europewalker profile image

      europewalker 5 years ago

      Enjoyed this hub. I purchased small dinner plates, that helps me so that I keep my portions under control and I don't go back for seconds.

    • Donna Sundblad profile image
      Author

      Donna Sundblad 5 years ago from Georgia

      Hi eruopewalker,

      I use smaller plates, too. No seconds is a great rule of thumb to follow to help with weight loss or maintaining your weight! Thanks for the comment!

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