"This study expands on previous studies on the consumption lower-calorie soup as a way to reduce food intake," says co-author Dr. Barbara Rolls, who holds the Guthrie Chair of Nutrition at Penn State. "Earlier work suggests that chunky soup in May the most filling type of soup, so that the objective of this study was to determine whether different forms of soup might have different effects on food intake."
The study examined whether the form of soup and the blending of its ingredients also affected food intake and satiety. All the soups tested in the study were made from identical ingredients: chicken broth, broccoli, potatoes, cauliflower, carrots and butter. However, the methods used to blend the ingredients varied, so that the shape of the soup changed. Soups tested included separate broth and vegetables, chunky vegetable soup, chunky-soup pureed vegetables, soup of vegetables and mashed potatoes.
While researchers thought that increasing the thickness or the amount of chewing required in May have made certain forms of soup more filling, results of the study show that low-calorie soup filling, regardless or other form.
Julie Flood, a doctoral student in nutritional sciences at Penn State, and Rolls presented their findings today (1 May 2007) at the Experimental Biology Conference in Washington, DC "Consuming a first course of low-calorie soup, in a variety of forms, can help in weight management, as shown in this research and previous studies. Using this strategy allows people of get an additional meal, while eating fewer total calories, "says Flood." But remember to choose wisely, choosing low-calorie, broth-based soups that are about 100 150 calories per serving. Beware of higher calorie, cream-based soups that could actually increase the total calories consumed.
The concept of "Volumetrics" - eating a good amount of food while controlling calories and meeting nutrient requirements - is based on a series of studies led by Rolls in the Laboratoire d'études des droits de l ' human ingestion Behavior. This spring, the paperback edition of his book, "The Volumetrics Eating Plan: Techniques and recipes for feeling full of fewer calories" is published by HarperCollins.
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