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How to Strengthen Your Appetite Control


 Posted by Susan Bowerman, M.S., RD, CSSD, CSOWM, FAND – Senior Director, Worldwide Nutrition Education and Training  0 Comment

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Fiber helps with appetite control.

Various factors determine how satisfying foods are, and you can use them to help you control your appetite.

What makes a food or a meal filling? You might assume that satisfying your appetite depends, more or less, on how much food you eat. That might also explain why so many people feel that in order to maintain appetite control, they simply have to get used to eating less food.

Don’t get me wrong, portion control is definitely an important factor in controlling your food intake. But there are other factors at play, too. The composition of the food, such as the amount of fat, carbohydrate and protein it has, partly determines how satiating a food is. Texture plays a role, too. Even before a food passes your lips or enters your stomach, the sight, smell and any of your past experiences with that food, sends signals to your brain that can influence how much you eat.

Appetite Control and Influencing Factors

Anticipating that the food will fill you up
When you’re about to eat something, the sight and smell of the food signals the body that nutrients are on the way. These cues, sent from your senses to your brain, prepare your body for the process of digestion and absorption. But something else happens: your brain anticipates that the food is going to satisfy you, too.

The influences of your senses of sight and smell really do matter. It’s been shown, for instance, that a bowl of soup is perceived as more filling when it’s consumed normally than if the same volume of soup is delivered in a way that bypasses your sensory organs (say, through a tube going directly into the stomach). So, before you take a bite, take a moment to appreciate the color and aroma of your food, and remind yourself of how satisfying your meal is going to be.

The satiating power of protein
Protein is more satiating than carbohydrate, which tends to be more satiating than fat. These satiating effects of protein are primarily physiologic—through influences, among other things, on hormones in your digestive tract that signal fullness. But there are sensory influences: the taste and texture of protein-rich foods tend to promote a feeling of fullness, too.

Fiber is filling
Fiber helps with appetite control in a number of ways. First, fiber makes foods more bulky. High-fiber foods like vegetables and fruits take up a fair amount of room in your stomach, so they fill you up but at a relatively low calorie cost. Fiber also takes a while to digest, so it slows the rate at which foods leave your stomach. Soluble fibers—found in foods like apples, barley, beans and oats—thicken up once they hit your stomach. And that can also contribute to a feeling of fullness.

Texture matters, too
In general, liquids that are thick and viscous are perceived as being more filling than watery fluids, even if the calorie counts are the same. This is another example of how the sensory property of a food affects expectations of quenching hunger. Thicker liquids tend to signal more nutrients than watery fluids, which are more likely associated with quenching your thirst.

There are studies to support this. Smoothies that are thickened with a bit of calorie-free cellulose, for example, are rated as more filling than thinner ones. And that’s even though both contain the same amount of protein and other nutrients, as well as calories.1 Another study found that simply whipping more air into a smoothie, which doubled the volume, led study subjects to report less hunger at their next meal. This resulted in the intake of 12% fewer calories at their next meal.2

The hungrier you are, the more you’re likely to eat
Most people are aware of this. If you wait until you’re ravenous, you’re probably going to overeat once you get the chance. One reason for this is that as your hunger level rises, you become much more sensitive to salty and sweet tastes.3 That’s probably because these two flavors tend to signal that a food is edible—compared to say, a bitter taste. Food manufacturers must know this. Is it any wonder that so many of our snack foods—the ones we dive into when we’re famished—are loaded down with salt and sugar?

1Mattes RD and Rothacker D. Physiol & Behav, 74:551, 2001

2Rolls BJ et al. Am J Clin Nutr. 72:361, 2000

3Zverev YP. BMC Neuroscience, 5:5, 2004

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Susan Bowerman, M.S., RD, CSSD, CSOWM, FAND – Senior Director, Worldwide Nutrition Education and Training
Susan is the Senior Director of Worldwide Nutrition Education and Training at Herbalife, where she is responsible for the development of nutrition education and training materials, and is one of the primary authors of the Herbalife-sponsored blog, www.discovergoodnutrition.com. She is a Registered Dietitian and holds two Board Certifications from the Academy of Nutrition and Dietetics as a Certified Specialist in Sports Dietetics, and a Certified Specialist in Obesity and Weight Management. Susan is also a Fellow of the Academy of Nutrition and Dietetics. Susan graduated with distinction in biology from the University of Colorado, and received her master’s degree in Food Science and Nutrition from Colorado State University. She then completed her dietetic internship at the University of Kansas. Susan has taught extensively and developed educational programs targeted to individuals, groups and industry in her areas of expertise, including health promotion, weight management and sports nutrition. Prior to her role at Herbalife, she was the assistant director of the UCLA Center for Human Nutrition, and has held appointments as adjunct professor in nutrition at Pepperdine University and as lecturer in nutrition in the Department of Food Science and Nutrition at Cal Poly San Luis Obispo. Susan was a consultant to the (then) Los Angeles Raiders for six seasons, and was a contributing columnist for the Los Angeles Times Health Section for two years. She is a co-author of 23 research papers, 14 book chapters, and was a co-author of two books for the public: “What Color is Your Diet?” and “The L.A. Shape Diet” by Dr. David Heber, published by Harper Collins in 2001 and 2004, respectively.


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