Men with higher testosterone has been linked to cheating in various studies--honestly I thought this was common knowledge. And treatments for "low t" (targeted at middle-aged and older males) have been more and more common over the past few decades. I guess it just seems fairly plausible.

[1] https://pubmed.ncbi.nlm.nih.gov/31326436/

[2] https://www.apa.org/monitor/dec06/testosterone

[3] https://uk.style.yahoo.com/men-high-testosterone-more-likely...

Literally none of that supports your hypothesis, and you haven't established the first factor: are testosterone treatments statistically significant within the target demographic?