Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Medical Are all calories equivalent for fat loss?

  1. Yes

    1 vote(s)
  2. No

    2 vote(s)
  1. Jul 23, 2012 #1
    Which position offers stronger evidence? Please vote: No or Yes.

    Here are a few papers taking each position:

    1. No, all calories are not created equally:

    a. Under Free-living conditions:
    Effects of Dietary Composition on Energy Expenditure During Weight-Loss Maintenance

    b. Under metabolic ward (hospitalization) conditions:
    Dietetic treatment of obesity with low and high-carbohydrate diets: comparative studies and clinical results.

    c. Theory
    Thermodynamics of weight loss diets

    d. Timing of food/calories
    Time-Restricted Feeding without Reducing Caloric Intake Prevents Metabolic Diseases in Mice Fed a High-Fat Diet
    http://www.ncbi.nlm.nih.gov/pubmed?...etabolic Diseases in Mice Fed a High-Fat Diet

    2. Yes, all calories are treated the same.

    a. Under Free-living conditions:

    Comparison of Weight-Loss Diets with Different Compositions of Fat, Protein, and Carbohydrates

    b. Under metabolic ward (hospitalization) conditions:

    Almost all metabolic ward studies show no significant difference in weight/fat when altering macronutrient ratios if calories are the same. And with respect to the Rabast study it has been criticized because:
    Loss of weight, sodium and water in obese persons consuming a high- or low-carbohydrate diet.
    Glycogen storage: illusions of easy weight loss, excessive weight regain, and distortions in estimates of body composition.

    c. Theory
    Is a calorie a calorie?

    d. Timing of food/calories
    International Society of Sports Nutrition position stand: meal frequency
    Increased meal frequency does not promote greater weight loss in subjects who were prescribed an 8-week equi-energetic energy-restricted diet.
    Last edited: Jul 23, 2012
  2. jcsd
  3. Jul 26, 2012 #2
    This is a recent study that is pretty interesting and suggests (as some have argued) that you can't out-train a bad diet and that people mistakingly put too much emphasis on exercise/physical activity for keeping slim/maximizing fat loss instead of watching what and particularly how much they eat:
    Hunter-Gatherers, Westerners Use Same Amount of Energy, Contrary to Theory

    Hunter-Gatherer Energetics and Human Obesity
  4. Dec 17, 2012 #3
    I sorta changed my mind on this topic, at least slightly after reading these 2 reviews on the topic. And it seems bodybuilders were right after all, as protein does seem to offer a small metabolic advantage:
    Presence or absence of carbohydrates and the proportion of fat in a high-protein diet affect appetite suppression but not energy expenditure in normal-weight human subjects fed in energy balance.

    The study is summarized nicely in this write-up by James Krieger:
    Increasing Protein, or Decreasing Carbohydrate…Which Gives You a Metabolic Advantage?
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?

Similar Discussions: Are all calories equivalent for fat loss?
  1. Simplest fat (Replies: 4)

  2. Calorie Measurement (Replies: 1)

  3. Fat location (Replies: 4)

  4. Fat freezing (Replies: 5)