Mike Mahler's Aggressive Strength Testosterone Booster Review

Testosterone Booster Review Mike Mahler Estrogen Control and Testosterone Booster

Looking to increase your Testosterone levels? Worried about the negative effects of high estrogen? Don't want to go down the Hormone replacement path but all the natural 'fixes' and testosterone boosters either seem to good to be true or don't seem to work right?

I know how tough and frustrating it can be. And I aim to put your mind at ease with this Mike Mahler Aggressive Strength testosterone booster review.

After finding out I had stage 3 adrenal fatigue I discovered my testosterone levels were rock bottom and my estrogen was through the roof. Very scary and somewhat embarrassing. However, this was back in 2014 and I have since turned my numbers around. If you're looking to see how, I have covered it all in great detail in my Testosterone ebook- 29 Proven & Effective Ways to Drastically Increase Testosterone Without Drugs.



The Mike Mahler Aggressive Strength Testosterone Booster  

There are so many testosterone boosters out there, all claiming to contain the miracle ingredient. I was looking for a quick fix back in 2014 and tried a few myself, though I never had any great success (instead I found success with lifestyle, diet & training changes). A year later, with my numbers now solid I kept hearing about a testosterone booster that "actually worked".


What was it? Well it was put together by a guy named Mike Mahler and it's called Aggressive Strength Testosterone Booster & Estrogen Control. Generally I would just brush off these claims as more internet marketing fluff. But then I started hearing things from people I knew and trusted.

Colleagues and fitness professionals who I knew well and had worked with started saying they were having positive results while taking Aggressive Strength. Sharing this feedback with some of my clients, two of them decided to try it for themselves. Again, both had great results..


The Science

Always seeking an edge and understanding the benefits of higher testosterone (increases muscle mass, decreased fat, increase libido and sexual performance, increased bone density etc) and the concerns of high estrogen (prostate issues, higher fat retention especially around the hips, thighs, chest and abdominal area) I decided I had to try it.

Not wanting to fall victim of the placebo effect, I figured I needed some hard data. Something to prove whether this had an effect on my body or if I was just wasting more money on another silly supplement.

Also, I coach & train people online, and what I teach and recommend must always go through a rigorous process - if there is no scientific proof, I want to either test it on myself or know people that I trust that have had great success. Whether it's a supplement, a training plan, or a dietary recommendation, everything must pass this 'test' of mine. Therefore, I need some hard evidence to prove whether XYZ is effective or not.


The Experiment

The obvious metric to test would be my Testosterone levels. Knowing that there is a big difference between total testosterone and free testosterone (total testosterone is the testosterone found in the blood, free testosterone is the biologically active - or 'useable' testosterone - that's not bound to sex hormone binding globulin), I knew I needed the gold standard of testosterone testing. That is the DUTCH method (Dried Urine Testing for Comprehensive Hormones). You can also get an accurate testosterone test done with LetsGetChecked. (use discount code ALEXFERGUS to save)

The past 3 months prior to the experiment I didn't use any testosterone boosting herbal supplements. The lab samples were done over a weekend and on the monday (monday 27th July 2015) I begun my 8 week cycle of Aggressive Strength Testosterone Booster & Estrogen Control.

I decided to use both the Test booster & the estrogen control as my estrogen was still high on my last test (done late 2014). Mike Mahler (Aggressive Strengths manufacturer) recommends a cyclic approach to taking the herbs. 8 weeks on and 4 weeks off. So that's what I did. I will take these products every day (3 test boosters - 1in the AM, one midday pre training and 1 in the evening, and 2 Estrogen controls - 1 in the AM, 1 at night) for 8 weeks.

At the end of the 8 weeks I will retest my testosterone and estrogen numbers to see what change has happened.

Now this isn't going to met the academic journal standard in terms of experiment control, but it's enough data for me to know whether I (and my clients) should use a product or not. 


Tools of the experiment - DUTCH Hormone Testing and The Test Booster Caps


The Product

What actually is Aggressive Strength Test Booster & Estrogen Control? It's a blend of proven & effective herbs that help boost testosterone & lower estrogen in various ways (whether it's increasing natural production, increasing the conversion of total testosterone to the readily used free testosterone, or working as a natural aromatase inhibitor).

The Testosterone Booster Caps contain:

  • Bulbine Natalensi - which has been shown in rat studies to increase testosterone by a whopping 347% and crush estrogen by 35%. Human feedback is also very positive
  • Stinging Nettle Root - Stinging nettle root supports free levels of testosterone and the much stronger DHT (dihydrotestosterone) by unbinding both from SHBG (sex hormone binding globulin).
  • Mucuna Pruriens-  Mucuna pruriens is an Ayurvedic herb that has been used for centuries to increase libido, energy, optimize blood sugar, mood support, and is well known for its powers as an adaptogen. It has also been shown to boost dopamine levels.

The Estrogen Control Caps Contain:

  • Turmeric Extract (Curcuma Longa) with BioPerine® - Turmeric is a very effective estrogen blocker which works by forcefully blocking estrogen receptors on the cellular level.
  • Brassaiopsis glomerulata Extract - Extracts of the leaves of Brassaiopsis glomerulata have powerful anti-oestrogenic effects making it a potent natural aromatase inhibitor.



The Results

Update 1 - 7th September 2015 - My Starting Levels

So I've just received my pre Test Booster hormone results from Precision Analytical. Both my estrogen and testosterone are quite low. I'm 28 years old, and as you can see from the lab results below, both numbers are well in the low range:

Full Lab Results For the Pre Supplement Cycle (26/7/15)

DHEA - 3392

Testosterone - 36.2 ng/mg

5a-DHT - 5.4 ng/mg

5a-Androstanediol - 93.3 ng/mg

Total Estrogen - 14.3

E2 (Estradiol) - 0.8 ng/mg


Far from ideal, but it means I have plenty of room for improvement! Let's see how the aggressive strength test boosters work! I ran these results past Mike Mahler, and he suggested that I cease taking the Estrogen Control supplements, due to my already low estrogen levels, and upping the testosterone booster to 4 caps a day (from 3). He recommended using the Estrogen Control caps in the 4 week 'off cycle'. 

I have made these changes as of the 7th of September, and have decided I will do the hormone retest after 12 weeks instead of 8. Why? This way I will do one complete cycle - 8 weeks on the test booster followed by 4 weeks off the test booster but on the estrogen control.

I'll report back in a few weeks!


Update 2 - Post Cycle Levels - The results

After 12 weeks (8 using the test booster, and 4 weeks 'off cycle' using the estrogen control) I took my 2nd DUTCH test and sent them off to the labs. After what felt like an eternal wait, I finally received my results (20th November 2015).

So what happened? Well in a nutshell - My Testosterone Increased and My Estrogen Stayed about the same!

Let's have a closer look at the data:

  • Estrogen - Pre cycle my estrogen was 14.3, increasing slightly to 14.9 (so it has increased only 4.2% during the cycle).
  • Testosterone - pre cycle it was 36.2. Post cycle - 45.6! A whopping 26% increase!

26% increase in testosterone over 12 weeks taking Mike Mahler's Aggressive Strength, while estrogen remained pretty stable. I'll take that!

Before we look deeper into the results, I need to make one thing clear. This was far from being a 'controlled experiment' and the sample size was only me. Meaning there were other factors at play that could have caused the change. It is nearly impossible to do perform a controlled experiment that will accurately say whether the Aggressive Strength booster worked or not. I think the best way is to experiment on yourself and see if you notice change.


Before and After - The Data


Pre Aggressive Strength Cycle

Post 12 week’s using Aggressive Strength & EC.

% Change

Total DHEA Production



+ 9%





5a-DHT (ng/mg)








Estrogen Total



+ 4 %

E2 (Estradiol) (ng/mg)









As you can see, all but one measurement have changed for the better. Though the estrogen total did increase slightly, I should point out two things:

  • My estrogen levels are actually quite low, so even though it has bumped up 4%, it is still in the low range.
  • My Estradiol figure remained flat after the 12 weeks. Estradiol is the potent form of estrogen that men need to be wary of.

On the testosterone front:

  • My total testosterone increased by 26% to 45.6 ng/mg. This increase is great, but it still leaves me with a pretty average, if not slightly low testosterone figure.
  • My 5a-DHT increased a staggering 52% Though there is good news and bad news. The good news is that 5a-DHT is the most potent androgen (3x more than testosterone). The bad news is that my figure at 8.2 is still considered low.
  • Meanwhile my 5a-Androstanediol figure increased 34% and is actually in the 'good range'.Some prefer this figure when looking at androgen levels.

Closing Thoughts

So there you have it. Based on my N=1 experiment, Mike Mahler's Aggressive Strength Testosterone Booster and Estrogen Control herbal blend does work. A 26% increase in total testosterone along with a boost in all my other androgen markers is very pleasing. Though my estrogen didn't fall, and instead increased slightly (4%) I wasn't worried as my numbers are quite low plus my estradiol figure remained flat.

Other than the labs, what else did I notice throughout this experiment? I had an increase in vigour - though it could still be better. I am definitely leaner than when I started (I tested my body fat % using the Skulpt Aim Body Fat Device and snapped the below photo 8 weeks into my cycle) and my strength continues to improve.

But at the end of the day its the lab results that matter the most!

Will I continue to take the test booster/estrogen control combo? Personally I will continue to cycle the testosterone booster, but I won't bother with the estrogen control supplement as my estrogen levels are pretty good already.

Would I recommend the combo to male clients? Yes I will. Obviously it will depend on their current hormone status (you can do your own testosterone testing through LetsGetChecked) but most men could do with a wee boost in their testosterone numbers!

What Do I Recommend For Someone With Low Testosterone?

That is simple. I recommend that take a look at this - http://jointheprogram.online/ 

If you have any questions regarding my experiment please post them below and I'll get back to you personally. If you have experience using Mike Mahler's Aggressive Strength Testosterone Booster and Estrogen Control herbal blend please share your feedback below. I would love to hear your results!

** Mike has also shared a discount code for his Aggressive Strength Testosterone Booster - just click THIS link and enter code LLA for 10% Mike Mahler products. **

Do you suffer from Low T? I've been through hell and back when it comes to low testosterone so feel free to post any questions you may have below. I'll do my best to answer them.

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Note: I earn a small referral fee from some of the links on my site. I only recommend products that I personally use myself or recommend to my clients. Your purchase helps support this site and the information I can share with you.


This blog post was written by Alex Fergus. Alex is an ISSN Sports Nutrition Specialist, Fitness Professional and certified Superhuman Coach who continues to expand his knowledge base and help people across the world with their health and wellness. Alex is recognized as the National Record Holder in Powerlifting and Indoor Rowing and has earned the title of the Australian National Natural Bodybuilding Champion. Having worked as a health coach and personal trainer for over a decade, Alex now researches all things health and wellness and shares his findings on this blog. Learn more about Alex's Credentials HERE.

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