@spider.coded's testosterone transition advice, fact-checked

What did @spider.coded actually say?

Three months into testosterone therapy, Michael listed what he called the side effects "nobody is going to tell you about." His list: intense body odor, unexpected hair growth (specifically on the buttocks), a dramatic spike in libido, lower frustration tolerance and increased irritability, a sore throat and excess mucus as the voice drops, and difficulty urinating with a full stream. He framed these as embarrassing truths the medical establishment glosses over. That framing is partly fair, partly exaggerated. Some of what he described is clinically documented. Some of it is personal experience being passed off as universal fact. Worth separating the two.

Does the science back this up?

Mostly, yes, with caveats. The side effects Michael described are not fabricated. Testosterone therapy in transgender men is associated with increased eccrine and apocrine gland activity, which does intensify body odor. Increased libido is one of the most consistently reported early effects across the literature. Voice changes are real and do involve laryngeal tissue remodeling. The frustration with the sore throat claim, though, is that his explanation of the mechanism, "vocal cords get thicker" causing mucus buildup, is a plausible-sounding theory that is not well-supported in peer-reviewed literature. The urination claim is the most speculative of the bunch and deserves scrutiny.

Asscheman et al. (2011, European Journal of Endocrinology) documented a broad range of physiological changes in long-term testosterone use in transgender men. Vehof et al. (2021, Transgender Health) specifically examined patient-reported side effects and found libido increase and body odor among the most commonly reported early changes.

What did they get wrong (or right)?

Credit where it is due: the body odor and libido points are accurate and genuinely underreported in clinical intake conversations. Same with general mood shifts. The Endocrine Society's 2017 clinical practice guidelines acknowledge psychological and emotional variability as expected during early hormone therapy.

The sore throat mechanism is where things get shaky. Michael says "vocal cords get thicker" and that causes mucus buildup. Testosterone does cause hypertrophy of the laryngeal cartilage and vocal fold lengthening (Damrose, 2009, Journal of Voice), but attributing a sore throat to mucus from cord thickening is a folk explanation, not a clinical one. The throat discomfort some people report is likely from inflammation during rapid tissue change, not mucus accumulation from thicker cords.

The urination claim, that you "can't pee properly" and lose stream height, is the weakest. Clitoral hypertrophy (common in testosterone therapy) can affect urinary stream direction in some individuals, but this is not universal, and framing it as guaranteed is inaccurate. No large-scale study confirms altered urinary stream as a standard testosterone side effect in transgender men.

What should you actually know?

If you are considering testosterone therapy, the side effects Michael described are worth knowing about, but you should get this information from a clinician who can apply it to your specific health profile, not from a three-month-in TikToker, no matter how well-intentioned. Early testosterone therapy does produce rapid and sometimes disorienting changes. Libido spikes can be significant and are worth discussing with a provider before they catch you off guard. Emotional regulation challenges are real and can benefit from behavioral health support during transition.

Body odor changes are genuinely underemphasized in patient education materials. Stocking up on antiperspirant is not bad advice. But the claim that everyone will experience every item on this list, with no variation, is the kind of oversimplification that creates anxiety for people whose experience differs from the narrator's. Individual response to testosterone varies meaningfully based on dose, delivery method, baseline hormone levels, and genetics. Talk to a qualified provider about what to actually expect for your situation.