Testosterone and FTM voice changes: what the science shows

What did @selfmadebadboy8 actually say?

Pretty simple, actually. This creator documented their voice changing across two years of testosterone therapy, starting from day one and running monthly check-ins through the two-year mark. No wild medical claims, no dosing advice, no promises about timelines. The throughline is personal: "if I can do it, you can do it." That's it. This is a before-and-after voice log, not a how-to guide.

The creator missed some recording windows, openly noting they "forgot recording for like a couple months" because they were busy. That kind of casual honesty is actually more credible than a polished, suspiciously consistent progression video. The clip ends with a birthday candle, a wish, and a sign-off: "See boys." The emotional weight is real, and the framing is encouraging rather than prescriptive.

Does the science back this up?

Yes, broadly. Voice deepening is one of the most well-documented and consistent effects of testosterone therapy in transmasculine individuals. The progression shown here, gradual change over months with most noticeable shifts in the first year, matches what the research actually describes.

Ziegler et al. (2018, Journal of Voice) found that fundamental frequency (the technical measure of voice pitch) dropped significantly in the first six months of testosterone therapy, with continued but slower changes through year one and beyond. Similarly, Azul et al. (2017, International Journal of Language and Communication Disorders) documented that voice changes are variable across individuals, meaning some people hear dramatic shifts early while others experience a slower curve. The two-year arc shown in this video falls well within the documented range. There is nothing in this video that contradicts clinical literature on androgenic voice change.

What did they get wrong (or right)?

Mostly right, with one important caveat worth flagging for viewers who might draw the wrong conclusions. The creator never claims their timeline is universal. That matters. A significant chunk of the transmasculine community on TikTok watches these videos and sets their expectations accordingly, which can create real distress when their experience differs.

The research is clear that voice change timelines vary substantially. Hancock and Helenius (2012, Journal of Voice) noted that factors including baseline anatomy, dose, frequency of administration, and individual sensitivity to androgens all affect outcomes. Some people see dramatic change in three months. Others wait over a year for shifts that feel meaningful. The video does not mislead on this, but it also does not address it, which is a gap.

On the positive side: documenting from day one is genuinely useful data. The creator did not exaggerate the speed of change or promise results. The pacing looks credible and consistent with typical androgenic voice progression.

What should you actually know?

If you are a transmasculine person watching voice update videos for reassurance or expectation-setting, here is the honest version. Voice deepening on testosterone is real, well-supported by research, and for most people, irreversible once it occurs. But the timeline is not predictable from someone else's video.

Azul (2015, International Journal of Transgender Health) specifically warns against using community videos as clinical benchmarks, because selection bias is significant. People who post voice updates tend to be those with noticeable changes. The people whose voices changed minimally or slowly are underrepresented in the content you see.

Also worth knowing: voice changes are typically considered a permanent masculinizing effect, unlike some other testosterone effects that partially reverse if therapy is stopped. If voice change is a specific goal, that conversation belongs with a provider who understands your full health picture, not a TikTok comment section. FormBlends connects patients with licensed clinicians who can actually evaluate individual factors.

The bottom line on this video

This is one of the more honest videos in this category. The creator made no medical claims, no dosing recommendations, and no promises about what viewers should expect. The emotional message, "if I can do it, you can do it," is motivational rather than prescriptive. The voice changes depicted are consistent with published clinical data on testosterone therapy. The main risk here is not misinformation from the creator. It is viewers using a single person's documented timeline as a guaranteed roadmap for their own body, which no video can provide.