Posts

Showing posts with the label metabolic damage

Popular topics

Show more

Physique Athletes Not Prone to Metab./Hormonal 'Damage', Recent Pilot Study in 15 Male & Female Athletes Suggests

Written by | published on
Image
Even though the study has male and female study participants this study is still more geared towards the men - why else do we have testosterone, but not estrogen measurements? As the scientists point out as early as in the title, a recent paper by Trexel et al. (2017) is indeed (at best) a "pilot study" to "evaluate changes in body composition, metabolic rate, and hormones during post-competition recovery" in "physique athletes". In view of the lack of reliable data from the contest preparations o bodybuilders and other physique-sport athletes, even this "pilot" data is more than worth reporting. That's particularly true, because it is still not clear, as Trexel et al. write whether the "physiological effects of contest preparation persist after competition" and thus whether "they may predispose [...] to preferential gain of fat mass and prolonged, deleterious endocrine side effects" (Trexel 2017) Read about rather...
Read full article »

Why's Maintaining 'Ur Fat Loss so F* Hard? Calorie Counter Will Ramp Up Your Appetite, No Matter What - Lifelong Anti-Weight-Gain Efforts Required in Formerly Obese Subjects

Written by | published on
Image
If  obesity is a chronic disease it cannot be surprising that it cannot be cured and weight loss maintenance requires life-long effort(s) on part of the formerly obese (note: things are different for non-obese individuals trying to shed extra-pounds). I've discussed the issue of "metabolic damage" in a series of previous SuppVersity  articles and pointed out that the scientific evidence supporting the disproportionate down-regulation of your metabolic rate with (significant) weight loss cannot support the exorbitant weight rebound we see in many so-called "weight-reduced individuals", who return to their "normal" dietary habits. Now, a recent study from the US (Polidori. 2016) shows that this weight gain is mostly driven by a hitherto largely overlooked increase in appetite - an increase that goes way beyond any effects of "metabolic damage". High protein helps, but do not counter the weight loss induced changes in RMR & appetit...
Read full article »

True Alternate Day Fast Beats Classic Dieting: Max. Fat, Min. Muscle Loss, No 'Metabolic Damage' in 32 Wk Human Study

Written by | published on
Image
This is exactly the way your plate will look during true alternate day fasting. This study is not just about alternate day fasting aka ADF. It is about "true alternate day fasting" - What is that? Well, it's not an official medical term, yet, but if you hadn't read about "alternate day fasting" regimens at the SuppVersity before, you'd probably think that an "alternate day fast" would be a full fast as in "not eating anything" every 48h - like in "Monday, don't eat; Tuesday, eat regularly, Wednesday, don't eat; Thursday, eat regularly..." As of now, only a handful of rodent studies tested (quite successfully, though) these "true alternate fasting" regimen, while human studies often used reduced, but never no energy intakes on the fasting days. That's until now, though! Scientists from the University of Colorado Anschutz Medical Campus randomized decently healthy, but obese adults BMI 30 kg/m², age...
Read full article »

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

Written by | published on
Image
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...
Read full article »

Metabolic Damage, Energy Intake & the Human "Energy Thermostat" - An Update Based on Recent Studies

Written by | published on
Image
You may argue that it is unfair, but there's no way to negate that people who have been sign. overweight once are at a high risk of ending up with a reduced metabolic rate when they've achieved the same weight and body comp. as people who have never been obese. You will probably have heard of, maybe even experienced the nasty reduction in basal energy expenditure that occurs during and often persists after energy restricted diets. In today's SuppVersity article, I will briefly summarize the results of a couple of recent studies that may yield new insights into a phenomenon some people call "metabolic damage". Now, "metabolic damage", or as I prefer to call it, the diet-induced (semi-)permanent down-regulation of our basal energy expenditure wouldn't be a problem if our appetite would decrease to the same degree. Unfortunately, there's a disconnect between appetite and energy expenditure of which a recent study from the University of Leeds ...
Read full article »
Disclaimer:The information provided on this website is for informational purposes only. It is by no means intended as professional medical advice. Do not use any of the agents or freely available dietary supplements mentioned on this website without further consultation with your medical practitioner.