Navigation Links
Fat substitutes linked to weight gain
Date:6/20/2011

WASHINGTON Synthetic fat substitutes used in low-calorie potato chips and other foods could backfire and contribute to weight gain and obesity, according to a study published by the American Psychological Association.

The study, by researchers at Purdue University, challenges the conventional wisdom that foods made with fat substitutes help with weight loss. "Our research showed that fat substitutes can interfere with the body's ability to regulate food intake, which can lead to inefficient use of calories and weight gain," said Susan E. Swithers, PhD, the lead researcher and a Purdue psychology professor. The study was published online in the APA journal Behavioral Neuroscience.

The study used laboratory rats that were fed either a high-fat or low-fat diet of chow. Half of the rats in each group also were fed Pringles potato chips that are high in fat and calories. The remaining rats in each group were fed high-calorie Pringles chips on some days and low-calorie Pringles Light chips on other days. The Pringles Light chips are made with olestra, a synthetic fat substitute that has zero calories and passes through the body undigested.

For rats on the high-fat diet, the group that ate both types of potato chips consumed more food, gained more weight and developed more fatty tissue than the rats that ate only the high-calorie chips. The fat rats also didn't lose the extra weight even after the potato chips were removed from their diet. "Based on this data, a diet that is low in fat and calories might be a better strategy for weight loss than using fat substitutes," Swithers said. However, she warned that it can be difficult to extrapolate laboratory findings about rats to people, even though their biological responses to food are similar. The study was conducted by Swithers along with Purdue psychology professor Terry L. Davidson, PhD, and former Purdue undergraduate student Sean Ogden.

Why would a fat substitute confuse the body? Food with a sweet or fatty taste usually indicates a large number of calories, and the taste triggers various responses by the body, including salivation, hormonal secretions and metabolic reactions. Fat substitutes can interfere with that relationship when the body expects to receive a large burst of calories but is fooled by a fat substitute.

There is some good news if a diet is naturally low in fat. The rats that were fed a low-fat diet didn't experience significant weight gain from either type of potato chips. However, when those same rats were switched to a high-fat diet, the rats that had eaten both types of potato chips ate more food and gained more weight and body fat than the rats that had eaten only the high-calorie chips.

Swithers and Davidson have reported similar findings in previous rat studies that showed saccharin and other artificial sweeteners also can promote weight gain and increased body fat. The use of artificial sweeteners and fat substitutes has increased dramatically over the past 30 years, mirroring the increase in obesity in America. Dieters have turned to these artificial means to lower calories while still eating foods that taste sweet or fatty. So what is a dieter supposed to do to drop a size?

"Unfortunately, there is no silver bullet," Swithers said. "Eating food which is naturally low in fat and calories may be a better route than relying on fat substitutes or artificial sweeteners."


'/>"/>

Contact: APA Public Affairs
public.affairs@apa.org
202-336-5700
American Psychological Association
Source:Eurekalert

Related medicine news :

1. Smoking-Cessation Drug Chantix Linked to Heart Problems
2. Low testosterone linked to varicoceles
3. Pregnancy-related depression linked to eating disorders and abuse histories
4. Impotence Linked to Restless Legs Syndrome
5. Genetic mutation linked to asbestos exposure
6. Hormone Linked to Death Risk in Those With Early Kidney Disease
7. Brain imaging study of preschoolers with ADHD detects brain differences linked to symptoms
8. Childhood trauma linked to higher rates of mental health problems, Stanford/Packard finds
9. Too Much Weight Gain in Pregnancy Linked to Chubby Babies
10. Right Side of Heart Linked to Lung Diseases, Study Finds
11. Bariatric surgery linked to increased fracture risk
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:4/29/2016)... ... ... Conditions were ideal for Global Lyme Alliance’s (GLA) 2nd annual “Bite Back Against ... breeze and temperatures in the 60s. Over 400 runners, walkers and volunteers participated in ... 1-mile walk were held to increase awareness about Lyme disease and to raise funds ...
(Date:4/29/2016)... , ... April 29, 2016 , ... ... that student team BioCellection won the $30,000 Perlman Grand Prize of the 2016 ... Gloeckner Undergraduate Award, the Michelson People’s Choice Award, and the Committee Award for ...
(Date:4/29/2016)... ... April 29, 2016 , ... Melanoma is the deadliest type of skin cancer. Although only about ... of skin cancer deaths. More than 10,000 people are expected to die of melanoma this ... it is the one of the most commonly diagnosed cancers in young women. A recent ...
(Date:4/29/2016)... ... April 29, 2016 , ... For those who skip meals occasionally ... miss. That was among the many new lifestyle diet tips offered by nutritionists Pam ... Hour® Power of Water® radio show. Bonny and Lawrence noted that because proper nutrition, ...
(Date:4/29/2016)... ... April 29, 2016 , ... ... media enterprise focused entirely on patients with cancer, today announced that Lynne Malestic, ... as the 2016 CURE® Extraordinary Healer® for Oncology Nursing , which honors ...
Breaking Medicine News(10 mins):
(Date:4/28/2016)... Calif. , April 28, 2016 /PRNewswire/ ... Validation Lifecycle Management Solutions (VLMS) today announced ... and services for sufferers of chronic kidney ... System to manage their corporate validation process. ... seeking a software solution to manage their ...
(Date:4/27/2016)...   , ... le trimestre, soutenu par une croissance de +42% ... de +16% des ventes aux hôpitaux et cliniques  ... (Euronext : MKEA, FR0010609263 ; OTCQX : MKEAY), inventeur de Cellvizio®, ... chiffre d,affaires pour le premier trimestre clos au ...
(Date:4/27/2016)... NEW DELHI , April 27, 2016 ... CSR initiative to save newborns ... ,s hospital for women & newborns in collaboration with Breast ... has launched the first Pasteurized Human Milk Bank, ,Amaara, in ... the best nutritional food source for infants and should be ...
Breaking Medicine Technology: