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Nature of Diet, Scientific Studies on the Pritikin Diet, References
Volumetric is based on the fact that people like to eat more and many times will eat till they are full. Volumetrics is an approach to eating that helps satisfy hunger with fewer calories.
The term Volumetrics is used by Barbara Rolls, Ph.D., Guthrie Chair of Nutrition at Penn State and former president of the North American Association for the Study of Obesity, and award-winning journalist Robert A. Barnett in their book, Volumetrics: Feel Full on Fewer Calories. The title of the paperback edition is:
Weight-Control Plan: Feel Full on Fewer Calories.
In addition to this book Rolls has published more than 200 articles on Volumetrics.
Rolls' approach is to help people find foods that they can eat more of that are low in calories. The hook of Volumetrics is its focus on satiety, the feeling of fullness. Rolls explains that people feel full from the amount of food they eat not the type of food or number of calories they are eating.
HOW THE PLAN WORKS
Volumetrics is based on evaluating the energy density of foods. This concept is crucial to the whole diet. Energy density is the number of calories in a specified amount of food. Some foods that are very energy dense, are: fats, have a lot of calories packed into a small volume. Water is at the opposite side of the spectrum containing no calories. But drinking water alone does not satisfy, the water must be contained within the foods.
Some examples of very low-density foods include:
vegetables -- Cucumber is an excellent example
Very high-density foods include:
FURTHER READING AND REFERENCES: