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10%(+) Reduction in Testosterone After Glucose and Whey Protein Shakes - Is the Classic #BB Shake Anti-Anabolic?

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We're talking about a cross-over study in adolescent subjects and acute changes but that's neither the only nor the most relevant reason you don't have to be afraid of the bodybuilding staple, now. In fact, a closer look at the data seems to suggest that we're talking about a 'protein-anabolic decrease in testosterone'... sounds odd? Well, here's how it may relate to your #androgenReceptors (AR) and eventually your gainz, irrespective of your age, by the way. I have previously addressed the possible ill effects of very high protein intakes on your testosterone levels - in particular, when those intakes are combined with a caloric deficit and, accordingly, reduced intakes of glucose and fat (re-read "True or False - High or Low Protein Intakes Have Profound Influence on Testosterone, SHBG, Estrogen, Cortisol & Co?" | here )... Now, a new study in Clinical Endocrinology  ( Schwartz 2019 ) shows that testosterone ⇆ protein/carbohydrate inter...
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Vitamin D Supps & Testosterone | Black Tea May Keep You Leaner Than Green Tea | Pea, Oat, Rice Protein & Glycemia

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You can expect more research updates like this one in 2019 on the SuppVersity... as well as other changes. And best of all, there's still time to let me know what you'd like to see / be changed over the course of 2019... aside from the overdue switch to a mobile-ready webdesign (#IRemeberThePromises), obviously. While all three studies in this research update have been published last year, they are by no means "yesterday's news" - not even for those of you who "know" the studies which investigated (A) the effects of vitamin D supplementation on the suboptimal testosterone levels of 100 hypogonadal men, (B) the initially very similar but eventually fundamentally different effects of green- and black-tea supplements on the obesogenic effects of high-energy diets, and (C) the beneficial effects of the co-ingestion of plant protein on healthy people's postprandial glucose levels. What's new? Well, study A doesn't really tell you that vitam...
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If the Androgen Receptor Response to Training Determines Your Gainz, the Question is: How Can You Optimize 'ur AR Density? Training-, Diet-, and Supplement-Effects Reviewed

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Your androgen receptor status may not just determine how much muscle you gain - the data from Morton et al. seems to suggest that it even determines if you make visible muscle gains, at all. Unless you've missed following the SuppVersity on Facebook , yet, you will remember my recent, highly popular post which previewed the results of a recent study from the  McMaster University  in Ontario. Meanwhile, the full-text of the study has been published and it highlights what I pointed out before: It supports previous research, which showed that neither the acute increase in intramuscular free testosterone, nor dihydrotestosterone, or 5α-reductase predicts the muscle gains of resistance-trained men. More importantly, however, it has the potential to shift the interest in post-exercise changes of testosterone, IGF1, GH & co. to the androgen receptors or rather how they (and maybe other receptors, like the IGF-1 receptor) respond to resistant exercise. Read more abou...
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