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Fasting Shows No Weight-Loss Benefit Over Standard Meals in Randomized Trial


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  • #3677798
    Arthur
    BPL Member

    @art-r

    Fasting Shows No Weight-Loss Benefit Over Standard Meals in Randomized Trial
    By Amy Orciari Herman

    Edited by David G. Fairchild, MD, MPH, and Jaye Elizabeth Hefner, MD

    Fasting for two thirds of the day does not lead to greater weight loss than eating meals throughout the day, according to a randomized trial in JAMA Internal Medicine.

    Roughly 100 overweight or obese adults were assigned to time-restricted eating or consistent meal timing. In the time-restricted group, participants were advised to eat as needed from 12 p.m. until 8 p.m., and then fast for 16 hours until 12 p.m. the next day. In the consistent-meals group, participants were told to eat three structured meals across the day, with snacks as needed. There were no recommendations about caloric intake or physical activity.

    At 12 weeks, mean weight loss did not differ significantly between the groups (0.94 kg with time-restricted eating and 0.68 kg with consistent meals). Most secondary outcomes, including changes in fat mass, lipids, and fasting glucose, also did not differ significantly between the groups. Of note, the time-restricted group lost more appendicular lean mass than the consistent-meals group.

    The researchers conclude that the findings “do not support the efficacy of [time-restricted eating] for weight loss.”
    LINK(S):
    JAMA Internal Medicine article (Free abstract)

    https://jamanetwork.com/journals/jamainternalmedicine/fullarticle/2771095

    #3677804
    Greg Mihalik
    Spectator

    @greg23

    Locale: Colorado

    “There were no recommendations about caloric intake or physical activity.”

    Yep. Don’t reduce calories or increase activity and there will be no change. Brilliant!

    Use IF as a technique to support calorie reduction while increasing activity and many people will see sustained weight loss.

    I am one of them.

    #3677816
    Arthur
    BPL Member

    @art-r

    Greg.  your routine obviously works.  Any plan that reduces caloric intake and increases activity will work.  This study does not address your technique.  It addresses the advertised “go eat whatever you want for 6 hours, sit on the couch, and loose weight, and be healthy” proponents.

    #3677893
    Jacob
    BPL Member

    @jakeyjohn1

    It addresses the advertised “go eat whatever you want for 6 hours, sit on the couch, and loose weight, and be healthy” proponents

    This study shows that humans can consume the same amount of calories and nutrients in a restricted time window as they can unrestricted throughout the day.

    To be clear, there was no diet plan, no exercise plan, and the average weight change after 12 weeks for both groups was under 1kg (and they all had a lot to lose); Nothing happened during the study.

    This is evidence that fasting is just as healthy as eating regularly…

    Combine this evidence with evidence on autophagy, immune system function, etc and there is a real case to believe fasting will improve people’s health, generally speaking.

     

    #3677950
    Keith Johnson
    BPL Member

    @crossingzion

    Thanks. Good to know.

    #3708640
    Daniel Oxnard
    Spectator

    @danieloxnard

    Locale: Appalachia

    This appears to be a deeply flawed study.

    No control, a grossly confounding variable, and small population size.

    consistent meal timing (CMT) group eats “3 structured meals per day”

    vs

    time-restricted eating (TRE) group was instructed to eat “ad libitum

    ad libitum definition = feeding management through which the animals (humans in this case) are offered as much food as they want

    What is being “assessed” is CMT vs TRE, but by introducing “3 structured meals per day” vs “ad libitum” you introduce a huge confounding variable!

    #3708773
    Kattt
    BPL Member

    @kattt

    The trial was set up flawed  to begin with; restricted eating should be done with skipping meals at night, NOT in the morning. But, as others have said, that alone without the right caloric intake to consumption ratio will not cause weight loss. When you need studies because common sense is a rare commodity.  Next.

    #3708783
    Bruce Tolley
    BPL Member

    @btolley

    Locale: San Francisco Bay Area

    “…restricted eating should be done with skipping meals at night..”

    Is that not why we call breakfast break fast??

    Cheers

    #3708815
    Pedestrian
    BPL Member

    @pedestrian

    So much baloney…..the quoted study itself and “break fast”.

    Do what works for you….

    Conducting “studies” on human dietary patterns is a fool’s game.

    Can you lock up hundreds of people for a couple of  dozen years and control everything they eat and when they eat? Not gonna happen.

    No one’s eating patterns are stable enough over time (decades) to draw any useful conclusion about “reported” eating patterns.

    I can understand why people conduct these “studies” – mainly: publish or perish.

    I fail to understand why any layperson would pay any attention to this garbage.

     

     

     

    #3708833
    John L
    Blocked

    @snakejon

    I need to get out this year the COVID-19 20 pounds is real for me…

    #3708839
    Michael B
    BPL Member

    @mikebergy

    I can understand why people conduct these “studies” – mainly: publish or perish.

    Drive sales of diet programs.

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