500mg testosterone per week: TRT or a performance cycle?

What did @martinbirchtrt actually say?

The core claim here is straightforward: 500mg of testosterone per week does not automatically produce muscle gains, and most people chasing higher doses are ignoring the basics that actually drive results. He argues that diet, training, sleep, and recovery matter more than milligram count, and that "chasing milligrams" while neglecting fundamentals is why most people using performance-enhancing drugs see nothing. That framing is largely defensible, with some important caveats.

He never defines who his audience is, though. The hashtags tell you: this video is for people using supraphysiological doses, not men on medically supervised TRT for hypogonadism. Those are two very different populations with very different risk profiles, and conflating them, even implicitly, matters when you are talking about doses that are three to ten times what any legitimate TRT protocol would prescribe.

Does the science back this up?

On the core point, yes, mostly. The relationship between testosterone dose and muscle gain is real but not linear, and lifestyle factors do modulate outcomes significantly. But the research also shows that supraphysiological testosterone produces measurable muscle gains even without training, which complicates his argument.

Bhasin et al. (1996, NEJM) is the landmark study here. Men given 600mg of testosterone enanthate per week gained lean mass regardless of whether they exercised. The exercising-plus-testosterone group gained the most, but the testosterone-alone group still outperformed the exercise-alone group. That finding directly challenges the idea that diet and training are the primary drivers at these doses. Testosterone at supraphysiological levels has independent anabolic effects that do not require perfect lifestyle adherence. A more recent dose-response study by Bhasin et al. (2001, Journal of Clinical Endocrinology and Metabolism) confirmed a graded relationship between testosterone dose and lean mass accrual. The dose matters. Saying it does not is an overstatement.

What did they get wrong (or right)?

He gets the lifestyle fundamentals right. Training, sleep, and nutrition are genuinely the foundation of body composition change, and plenty of people waste drugs because they ignore that reality. That part of the message is sound and worth saying.

Where he overshoots is the implicit suggestion that dose is almost irrelevant. Saying people on "250, 500 or even 1000 milligrams" all get no results if they are not dialed in erases a large body of evidence showing dose-dependent effects. The Bhasin 1996 data alone makes that claim hard to defend.

He also never mentions health risk, which is a significant omission. At 500mg per week, users are looking at meaningful suppression of endogenous testosterone, elevated hematocrit, potential left ventricular hypertrophy, and lipid changes. Semsarian et al. (2020, Heart) and Baggish et al. (2017, Circulation) document cardiac remodeling in long-term anabolic steroid users. Framing 500mg weekly as a results optimization question without any safety context is irresponsible regardless of how accurate the fitness advice is.

What should you actually know?

If you are on a medically supervised TRT protocol, you are almost certainly not taking 500mg per week. Standard TRT doses for hypogonadism typically fall between 50mg and 200mg weekly, calibrated to bring serum testosterone into the physiological range, not above it. The doses discussed in this video are anabolic steroid cycles, not TRT, and the risks are not the same.

The lifestyle advice here, prioritizing sleep, training consistency, and nutrition, applies universally and is genuinely good. But anyone considering supraphysiological testosterone doses needs a full cardiovascular workup, regular monitoring of hematocrit, PSA, and lipids, and an honest conversation with a physician about long-term risk. Framing this purely as a results question misses most of what actually matters.

If you have questions about testosterone therapy that is medically appropriate for you, FormBlends connects you with licensed clinicians who can order labs, review your history, and provide evidence-based guidance without the bro-science filter.