"According to the Guardian, she had Gender Reassignment Surgery in 2000. So she doesn't have testicles (which produce lots of Testosterone), nor does she have ovaries (which produce the lower levels of testosterone found in non-trans women.
So for the past 17 years, her body has been incapable of creating testosterone."
Did you graduate from Donald Duck's school of medicine???
The Guardian said:
"Following her gender reassignment surgery in 2000"
There's no standard definition for that.
"Sex reassignment surgeries include "complete hysterectomy, bilateral mastectomy, chest reconstruction or augmentation ... including breast prostheses if necessary, genital reconstruction (by various techniques which must be appropriate to each patient ...)... and certain facial plastic reconstruction.""
It certainly is not stated that Jeska has no testicles!