What Is the Volumetrics Diet?

The diet is found in a book called The Volumetrics Weight-Control Plan co-authored by Barbara Rolls, PhD, a nutrition researcher at Penn State University, and Robert Barnett, a nutrition writer.

Who Is Dr. Barbara Rolls?

In addition to co-authoring the Volumetrics book, Dr. Rolls has researched obesity for more than 20 years. She served on the advisory Council of the National Institutes of Health’s Institute of Diabetes and Digestion and Kidney Disease as well as the North American Association for the Study of Obesity, for which she served as president.

What Is the Volumetrics Plan About?

The diet is based on the premise that it’s the volume of food eaten, rather than the number of calories consumed, that leads to our experiencing a sense of satiety (fullness). The plan promises that by eating foods that fill you up on fewer calories you will lose weight without feeling like you’re on a diet, being hungry, or suffering from a sense of deprivation.

You will see something called “calorie density” mentioned in this plan. The recommended foods on this diet have a low energy density, meaning they promote a sense of fullness; those to be avoided are energy dense, meaning they are higher in calories or you must eat a lot of them before you begin feeling full.

What Is the Evidence Behind This Diet?

According to the authors, we tend to eat roughly the same amount of food each day, regardless of the total number of calories consumed. If you eat about the same weight of food containing fewer …
Read the whole story on About.com.

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