fatnews.com Home page  >  Article | Previous article | Next article

SEARCH

QUICKLINKS AND VIEW OPITONS

  • Categories of Articles
  • Summary View
  • Headline View
  • Archive of Quotes
  • Contact Us
  • Follow @fatnews

    Rats on high-fat diet gained more weight eating Pringles Light chips made with olestra


    Posted by .(JavaScript must be enabled to view this email address)
    Monday, June 20, 2011 2:53 pm Email this article
    Fat Substitutes Linked to Weight Gain

    Rats on high-fat diet gained more weight after eating low-calorie potato chips made with fat substitutes

    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. Rats fed either Pringles chips or Pringles Light chips

    Rats were given either regular Pringles potato chips or Pringles Light Chips made with the fat substitute, Olestra

    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.

     

    Rats on a high-fat diet, fed both Pringles chips or Pringles Light chips, gained more weight

    Rats on a high-fat diet, fed both Pringles chips or Pringles Light chips made with fat substitute, ate more and gained more weight

    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.

     

    Rats did not lose the weight

    The rats did NOT lose the weight once the chips were removed from their diet

    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 confuse the body

    Fat substitutes can interfere with the process when a large burst of calories is expected

    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.

     

    Rats fed low-fat diet did not gain weight

    Rats fed low-fat diet did not gain weight from either type of potato chips

    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.

     

    Rats switched from low-fat diet to high-fat diet

    Rats switched from low-fat diet to high-fat diet, and who had eaten both types of chips, ate more and gained more weight

    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.

     

    Similar findings with artificial sweeteners

    Similar findings with artificial sweeteners, showing weight gain and increased body fat

    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.

     

    Artificial sweeteners and fat substitutes have increased in last 30 years

    Artificial sweeteners and fat substitutes have increased in last 30 years along with the rise in obesity

    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.”

    REFERENCE

    Swithers SE, Ogden SB, Davidson TL. Fat substitutes promote weight gain in rats consuming high-fat diets. Behavioral Neuroscience. 2011 Jun 20, 125(4):published on-line here, http://www.apa.org/pubs/journals/releases/bne-ofp-swithers.pdf.

    AUTHOR’S CONTACT INFORMATION

    Susan E. Swithers PhD
    Department of Psychological Sciences
    Purdue University
    703 Third Street
    West Lafayette, IN 47907 USA
    .(JavaScript must be enabled to view this email address)

    This article was posted on the American Psychological Association’s website http://www.apa.org/news/press/releases/2011/06/fat-substitutes.aspx.

    The paper is posted here.

    Articles on the same subject can be found here:


    COMMENTS

    Please feel free to share your comments about this article.


    Name:

    Email:

    Comments:

    Please enter the word you see in the image below:


    Remember my personal information

    Notify me of follow-up comments?



    © Copyright 2003-2021 - Larry Hobbs - All Rights Reserved.