@thattrickerhuman's testosterone transition update, fact-checked

What did @thattrickerhuman actually say?

Pretty much exactly what it sounds like. The creator documented their voice at intervals starting from day one through two years on testosterone, narrating each time point in sequence: "one day, one week, two weeks, three weeks, one month" and so on, all the way to "two years on testosterone." No dramatic claims, no medical advice, no product pitches. Just a before-and-after-and-everything-in-between voice timeline.

This is observational self-documentation, not a medical recommendation. The creator is showing, not telling you what to expect. That distinction matters a lot when evaluating what the video actually claims versus what viewers might infer from it. The implicit claim here is that voice changes are progressive and ongoing across two years, which is worth examining against the evidence.

Does the science back this up?

Yes, substantially. Voice changes during testosterone therapy in transmasculine individuals are among the best-documented and most consistent effects of gender-affirming hormone therapy, and the timeline shown here lines up with what research actually reports.

A 2016 study by Azul et al. in the Journal of Speech, Language, and Hearing Research found that voice changes, specifically lowering of fundamental frequency, begin within the first few weeks of testosterone therapy and continue for months, sometimes beyond one year. A broader review by Nygren et al. (2016, Journal of Voice) confirmed that vocal changes are typically most rapid in the first three to six months, with continued, slower changes possible after that. The fact that this creator's voice was still noticeably different at two years compared to one year is consistent with what researchers call an extended vocal change window, though individual variation is significant.

Watt et al. (2018, Clinical Endocrinology) also noted that voice changes are dose-dependent to some degree and correlate with serum testosterone levels, which adds an important asterisk: your results will vary based on your specific protocol.

What did they get wrong (or right)?

Mostly right, with one important gap. The timeline documented is credible and consistent with published evidence. The video does not overclaim. The creator never says "this is what will happen to you" or "your voice will change at exactly this rate," which is the kind of irresponsible extrapolation that gets people in trouble.

The gap is that the video, by its nature, presents one person's experience as implicitly representative. Six million viewers watching this will absorb a specific timeline as a kind of template. Research is clear that voice change timelines vary considerably based on age at initiation, dosage, route of administration, and individual anatomy. A study by Cosyns et al. (2014, Logopedics Phoniatrics Vocology) found significant inter-individual variability in vocal outcomes, meaning some people see dramatic change early; others see slower or less complete change across the same period.

That is not the creator's fault. But it is a real limitation of single-person documentation that viewers should understand.

What should you actually know?

Voice change is real, well-documented, and generally irreversible once it occurs. That last part matters. Unlike some other testosterone effects that may partially reverse if therapy is stopped, vocal cord changes are largely permanent after they occur. This is not a scare tactic, it is just pharmacology.

The clinical timeline varies. Most studies place the most significant frequency drop in the first three to six months, with changes continuing more slowly after that. Two years is within the documented range for ongoing change, but do not assume your experience will mirror this video's arc.

• Voice changes are driven by laryngeal growth and vocal cord thickening, not directly by circulating testosterone on a day-to-day basis.
• Vocal training during testosterone therapy can help with voice quality and control, separate from pitch changes.
• Some individuals report voice cracking or instability during the early months, which is consistent with the rapid structural changes occurring.
• If you are considering testosterone therapy, voice change is one of many effects that should be discussed with a qualified clinician, not planned around a TikTok timeline.

FormBlends connects patients with licensed clinicians who can evaluate whether hormone therapy is appropriate for you based on your individual health history, not a social media algorithm.