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Endocrine Side-Effects of Athletic Competition: Is Power Lifting for Pussies and Canoeing for Real Men? Sports Specific Hormone Profiles - Cause or Coincidence?

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With only one female power lifter and fewer female athletes for all sports, I didn't copy the hardly legible data for them, as well. Some of you will remember the sneak peak of the results of a recent study designed to measure the "profile of hormones in a group of elite athletes" I gave you on Facebook a couple of days ago ( read more ). In case you do belong to the >4,500 people who already liked the SuppVersity Facebook Page , you will also remember that the observational study a group of Irish + British researchers conducted was meant to provide information about "what may be considered as normal" in a group of people among whom the use of hormones as performance-enhancing agents is widespread. The research question M.J. Healy and colleagues from the St James’s Hospital, the Tallaght Hospital and the University of Exeter in Ireland and the UK tried to answer is thus: "What's actually normal for someone who's voluntarily exposing his bod...
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Can 5 Cups of Coffee Boost Testosterone to Estrogen Ratio in Overweight Men Transiently by ~200%? Plus: SHBG Its Own Receptor and Its Role in Prostate & Breast Cancer

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Testosterone booster in men and estrogen amplifier in women? As if there were not already enough good reasons to get your daily dose of the 'kingly' brew ;-) You would not have to be a diligent student of the SuppVersity to know: Coffee is a truly remarkable brew. Even mainstream media has gotten wind of the multitude of beneficial effects a moderate intake of the former drink of the kings and popes can have on your health and if it was not for the authors and newscasters blind reliance on whatever the press release guys are telling them, it would probably not even have been necessary for me to broach the beneficial effects coffee can have on your metabolic health and overall well-being in posts like " Coffee - 3 Cups a Day Keep Insulin at Bay ", " Pre-Workout Caffeine: Fat Liberator, Substrate Modulator, Trans-Fatty Acid Eliminator & Performance Upregulator! " and many more . So what is it this time? What else can coffee do for you? I guess som...
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Measuring Overtraining; Phosphatidic Acid to Potentiate the mTOR Effects of Leucine? Plus: Built-in Serm in Menopausal HRT Blocks Breast Cancer, Creatine Bumps Up Performance Not Body Weight, Estrogen Timing & Brain NDMA Toxicity

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Weight-supported sports such as cycling precipitate overtraining "20%", that's the SuppVersity figure of the week. It tailors directly to the first item in today's installment of On Short Notice and denotes the amount of professional athletes who exhibit symptoms of overtraining syndrome at any given time in their career. "The prevalence varies by sport and is thought to be highest in endurance sports requiring high volume intense training, such as swimming, triathlon, road cycling, rowing and, to a lesser extent, distance running."  (MacKinnon. 2000) What all those sports (except for distance running) have in common are long training hours on 6 days per week for several months without appreciable time off. Notably, the chances of overtraining also increase, when the equipment supports your body mass. With weight-bearing activities, such as distance running, on the other hand, the risk of musculoskeletal injury limits training volume and therefore r...
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+87% Increase in Testosterone Within 21 Days from a 100% Natural Supplement? Study Shows: Soy Bean Extract Can Do Just That While Wreaking Havoc on Your Testes. Plus: Corn Oil Reduces Testosterone to Estrogen Ratio by -50%!

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Image 1: I guess the feed of those boars does not contain any corn oil and is spiked with both bisphenol A and soy bean extract - I mean, how else could you possibly explain those balls? (img dirtybutton.com) Let me start today's post with a few questions: Would you buy a 100% natural product that can lower your estrogen levels by up to -98% , increase the weight of your testes by ~30% and, above all, boost your testosterone levels by a whopping +87% ? I guess, at least all those of you who either have not read or not understood the Intermittent Thoughts episode on estrogen's role in skeletal muscle hypertrophy are just sitting there, nodding their heads... I would yet also venture the guess that this nodding will end pretty abruptly, now that I am about to tell you that this all natural testosterone booster is derived from the powder of 2kg of Glycine max soy beans via methanol extraction, subsequently freeze dried and capped into 600mg caps of which the av...
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Intermittent Thoughts on Building Muscle: Estrogen, Friend or Foe of Skeletal Muscle Hypertrophy? Plus: "Hey, Bro! Are You 'SERMing' Away Your Satellite Cells?"

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Image 1: Iris Kyle's back is a living testostomy, ah... pardon testimony to the muscle building powers of estrogen ;-) Although we have identified a hell lot of verified and purported mechanisms by which testosterone, "the Big T" works its muscle building and fat burning magic, the results of the last installments of the Intermittent Thoughts was nevertheless not really satisfying. After discussing how testosterone programs stem cells to become muscle, not fat cells, how it increases the number of  motor neurons and thusly improves the voluntary neuronal activation of skeletal muscle tissue etc., we were still left with the question whether it was actually testosterone of maybe its central or local aromatization or reduction to estrogen or dihydrotestosterone (DHT) which was responsible for the effects. Now, since estrogen is associated with "all things female" and I am a gentleman of the old school, I decided to start with the latter after realizing that i...
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Licorice More Estrogenic Than Estradiol: Some of the Flavonoids in Glycyrrhiza Glabra Roots Turn Out to Be Superinductors of the Estrogen-α & -β Receptors

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Image 1: In view of the fact that most confectionary licorice contains no more than ~3% of the roots of the licorice plant, I would rather bother about the tricks the ~74g of carbohydrates (on a 100g base) of this treat may play on your insulin levels than about any potential negative effects the consumption of a few or even a whole bunch of these licorice wheels may have on your testosterone levels or overall manliness ;-) You probably have heard about licorice, the root of Glycyrrhiza glabra , a legume with a slightly sweet taste and one of the ingredient of the eponymous candy being a potent adrenal "revitalizer" that is used and advocated my many naturopathic doctors. If you frequent any of the major health and fitness boards on the Internet, you will yet also be familiar with some of its unwanted side-effects, first and foremost its scientifically validated anti-androgenic (specifically testosterone reducing) effects ( Zamansoltani. 2009 ). While Zamansoltani et al...
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