Does testosterone therapy actually reduce the ability to cry?

What's this video probably claiming?

Based on the caption "You lot told me I'd lose the ability to 😭" and the ftmhrt hashtags, @zelahglasson is almost certainly addressing one of the most persistent claims circulating in FTM transgender communities: that testosterone therapy reduces or eliminates the ability to cry emotionally. This is a claim that spreads rapidly in trans masc spaces, often framed as either a warning or a joke. The creator appears to be responding to community predictions, possibly confirming, denying, or nuancing their own experience. This matters because anecdotal reports from TikTok communities frequently get treated as settled medical fact, and the line between genuine physiological effect and placebo-adjacent expectation is genuinely blurry here. Emotional processing changes on testosterone are real, documented, and also frequently mischaracterized in both directions. Getting this wrong doesn't just mislead viewers, it shapes how people prepare for and interpret their own HRT experiences.

What does the science actually show?

There is legitimate research suggesting testosterone affects emotional processing, but the mechanism is more complex than "T kills crying." A 2016 study by van Honk et al. in Psychoneuroendocrinology found exogenous testosterone administration reduced empathic accuracy in healthy adults. Separate work by Hermans et al. (2008, Psychoneuroendocrinology) showed testosterone blunts amygdala reactivity to emotional stimuli. In FTM-specific populations, Zubiaurre-Elorza et al. (2014, Journal of Sexual Medicine) documented brain structure and functional changes following testosterone therapy. Crucially, a 2021 study by Nguyen et al. in Psychoneuroendocrinology found transgender men reported reduced emotional reactivity and crying frequency after starting testosterone, but approximately 40% reported no change or inconsistent effects. The physiological basis likely involves testosterone's suppression of prolactin, a hormone that facilitates emotional lacrimation, and changes in limbic system sensitivity. So there is a real signal here. It just doesn't apply uniformly to everyone, and calling it a loss of "ability" overstates the evidence considerably.

Where does the social media noise diverge from clinical reality?

The TikTok narrative around testosterone and crying tends to flatten a genuinely variable finding into a universal rule. Phrases like "you'll lose the ability to cry" imply a binary, permanent physiological change. The actual data shows a spectrum. Some people on testosterone report significantly reduced emotional crying within weeks of starting. Others report no change after years. Individual variation in baseline testosterone sensitivity, dosing protocols, and psychological context all matter. There is also a meaningful distinction between the physical act of crying and the underlying emotional experience. Research by Bylsma et al. (2011, Emotion Review) on sex differences in crying behavior suggests hormones influence the threshold for lacrimation, not necessarily the depth of emotional feeling. When creators frame this as a definitive side effect, they are making a claim the literature does not fully support, and they may be priming viewers to interpret ordinary emotional responses through a predetermined lens. That is not harmless.

What should you actually know?

If you are considering or currently on testosterone therapy and wondering about emotional changes, here is what is actually worth knowing. Testosterone does appear to modulate emotional reactivity in ways that some people experience as reduced crying frequency, but this is not guaranteed, not universal, and not necessarily permanent. The effect, when it occurs, typically emerges within the first three to six months of therapy. It does not mean you will stop feeling emotions. People on testosterone still grieve, still feel deeply, and still cry, often just with a higher threshold or different triggers. If you are experiencing significant emotional blunting or mood changes on testosterone that feel distressing rather than neutral, that is worth discussing with a prescribing clinician. Emotional changes that feel dysregulating are different from the milder crying-threshold shift that most of the research describes. Self-diagnosing based on TikTok predictions is a genuinely poor substitute for monitoring with a clinician who knows your baseline and your labs.