He was taking testosterone to counteract the listlessness caused by dementia and his Alzheimer’s meds. Along with “uppers”, probably adhd meds or Modafinil.
All of that is fine and actually good in moderation, but higher doses cause the weird aggression he had.
Testosterone will also cause prostate cancer (if hormone sensitive) to rapidly spread. This is why older men on replacement hormones get routine PSA checks.
He was definitely on testosterone?
The correlation of testosterone causing CA has been refuted. No study supports this. Same with heart disease.
Once again this is speculation. Do we have any of his free testosterone scores?