Can TRT actually change your bone structure and frame size?

What did @hasangymm actually say?

The core argument here is that natural testosterone optimization is basically useless for meaningful physical change. "You are wasting your time" if you expect significant gains in bone mass or muscle from natural approaches, he says. Only supraphysiological, injected testosterone moves the needle on development. For natural options, he narrows it down to fat loss, micronutrient sufficiency, and SERMs like clomiphene, while calling everything else, including ashwagandha and raw liver, "cope."

He also argues that the decline in male testosterone over recent decades tracks with the rise in obesity, linking aromatization of testosterone to estrogen as the mechanism. His bottom line: if you want real results, "you're never going to get the results you're looking for if you don't pin."

Does the science back this up?

On the big claim, yes, mostly. The literature does support the idea that supraphysiological testosterone produces substantially greater anabolic effects than anything achievable naturally. Bhasin et al. (1996, NEJM) remains one of the most cited studies here, showing that men given 600mg testosterone enanthate weekly gained significantly more muscle than those doing resistance training alone, even without exercise. That dose is well above the physiological range, which supports his point.

On fat loss and testosterone, the relationship is real and bidirectional. Caliber et al. (2021, Journal of Clinical Endocrinology and Metabolism) and earlier work by Fui et al. (2014, Clinical Endocrinology) confirm that obesity suppresses testosterone largely through aromatase activity in adipose tissue. Losing body fat does raise endogenous testosterone, though the magnitude varies. His framing of this as the single most impactful natural lever is defensible.

On SERMs, clomiphene does raise LH and FSH, which in turn raises testosterone. Shabsigh et al. (2005, Journal of Sexual Medicine) showed clomiphene citrate raised testosterone significantly in hypogonadal men. His point that even SERMs don't compare to direct testosterone injection is also accurate physiologically.

What did they get wrong (or right)?

He gets a lot right, but overstates a few things in ways that matter. Saying natural testosterone boosters will "never" produce noticeable effects is too absolute. Ashwagandha has actually performed reasonably in controlled trials. Lopresti et al. (2019, Medicine) found a standardized ashwagandha extract raised testosterone by about 15% over 8 weeks. That's not dramatic, but dismissing it as zero-effect "cope" is not accurate.

His SERM terminology is also loose. He calls clomiphene and anastrozole-class drugs "serums," which is likely a pronunciation issue, but the grouping of clomiphene with aromatase inhibitors like "nulvidex" (presumably Nolvadex, which is tamoxifen, a SERM, not an AI) reflects some conceptual blurring. These drugs work differently and carry different risk profiles.

One significant omission: SERMs are prescription medications with side effects including visual disturbances, mood changes, and unknown long-term safety data in men outside fertility treatment contexts. He presents them as a casual natural option without any of that context, which is a real gap.

What should you actually know?

The honest picture is more nuanced than "pin or give up." If you have clinically low testosterone, that's a medical issue worth evaluating with a licensed provider. If you're in the normal range and hoping supraphysiological testosterone turns you into a different person aesthetically, that is a separate conversation involving real risks: suppression of endogenous production, cardiovascular effects, fertility impacts, and more.

Fat loss genuinely does improve testosterone in men with obesity. Magnesium and vitamin D sufficiency matter, particularly if you are deficient. Sleep quality is also one of the better-supported natural variables, something he doesn't mention. Leproult and Van Cauter (2011, JAMA) found that sleep restriction to 5 hours per night dropped daytime testosterone by 10-15% in young men.

The framing of SERMs as "natural" is misleading for a general audience. Clomiphene is a prescription drug with a specific clinical use case. Presenting it as a casual optimization tool, particularly to a TikTok audience, skips over the medical evaluation that should precede its use.