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Weight Loss, 'Metabolic Damage' and the Magic of Carbs? Human Study Probes Effects of Carbohydrate Content, GL & GI on Diet-Induced Suppression of Resting Metabolic Rate

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Will slimming down from a 120 cm to a 60 cm waist always ruin your metabolic rate and set you up for weight regain or can high GI protect you from yoyoing? Broscience tells us: "Carb up to preserve your resting metabolic rate." And in fact, there is some scientific evidence that suggests a link between high(er) carbohydrate intakes and increased thyroid function. The same amount of T3 will trigger a sign. higher stimulation of lipolysis and fat oxidation, for example, on high vs. low carb diets (Mariash. 1980). Low carb diets, on the other hand, lead to significant reductions of the active thyroid hormone and increases in the 'thyroid receptor inhibitor' rT3 - even in healthy individuals and if the energy intake is standardizes (Serog. 1982; Ullrich. 1985). So, is broscience right? Well, overfeeding studies show a similar increase in T3 in response to protein, fat and carbohydrates (Danforth Jr. 1979). So refeeds should work, irrespective of their carbohydrate con...
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Glycemic Load, the GI's Complex Brother, Turns Out to Be A Good Predictor of Postprandial GLP-1 and GIP Response

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What does the glycemic load tell you about these foods? Right, an apple a day keeps the doctor away, ice-cream makes a healthy sweet treat and apple juice is one of those purportedly healthy drinks that are not on iota better than coke. It may be partly due to the correlation of low GL and high micronutrient content that going by the glycemic load is not the worst way to pick quality foods. After taking one week off, the SuppVersity Science Round Up is back today. As usual the show will kick off at 1PM EST (update: download podcast ) and I cannot complain about not having enough stuff to talk about. So here is a sneak peak on the news line-up for today: insulin in the brain - how it's keeping you lean breast cancer - protective & useless micronutrients prenatal caffeine - negative effects on male offspring mouth rinsing - caffeine & carbs, both work ashwaganda - Lance's new dope? betaine - the ergogenic w/ anti-NASH effect There is more - as usual, so do...
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Meal Timing, Glycemic Index & Load: Human Study Probes Whether "Hitting Your Macros" Really is All That Counts

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High or low GI, carbs in the morning or in the evning, cookies and dingdongs or all bran. So many questions and way too many answers from rodent studies or studies in obese diabetics... but what are Mr. and Mrs. Healthy Average Joe supposed to do? In a recently published paper, Linda M. Morgan, JiangWen Shi, Shelagh M. Hampton and Gary Frost take yet another look on a concept that has lost much of the momentum it had only a decade ago: The GI and / or GL paradigm (GI: glycemic index (abstract unit); GL: glycemic load, i.e. GI / actual amount of food) and combines another paradigm, which is still gathering momentum within the medical science community - the issue of nutrient timing, in order to answer the following questions: Will a large evening energy and carbohydrate load cause an increase in postprandial glucose that is comparable to the same amount of energy and carbohydrates in the morning? Will a high glycaemic excursions in the evening be ameliorated by decreasing the ...
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The "Best Diet" for Obese Kids Has a Low Glycemic Load and Still 40-50% Carbs. Plus: Kids Hate Atkins / Low Carb!

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Image 1: It's the "day of healthy eating", here in Germany... but wait: What exactly is "healthy eating"? I don't know if it was a "happy coincidence", but it was a coincidence that I heard on the radio that today is the "Day of Good Nutrition" (here in Germany, at least). Unfortunately, nobody appears to really know what "good nutrition" means. While the experts are still arguing whether you may or may not eat meat, whether all carbs are created equal etc. the average customer has absolute no idea, what "good nutrition" may be. The one thing he (or she) knows is what the radio moderator mentioned as well "this means you are not allowed to go to the fast-food outlet, today". Now, while for a still astonishingly (or should I say shockingly?) large proportion of the obese population of the western convenience society, fast food remains one of the biggest obstacles to weight loss, Mc Donalds and Co. are prob...
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