On some previous threads, some posters have brought up what about women with PCOS and testosterone. Here is a study and some commentary on that issue, although to be fair, we rarely see that argument supporting these male people these days. Maybe the message got through...
https://academic.oup.com/humrep/article/16/2/244/649618?login=false
I found a study that looked at the hormone levels in women breastfeeding. A breastfeeding women without PCOS has the following testosterone levels at 4 weeks and 8 weeks of breastfeeding :
Ng/ml
4th wk 0.13
8th wk 0.11
A woman with PCOS (ng/ml)
4th week 0.21
8th week 0.26
The male who fed exclusively for 6 weeks started with 0.205 ng/ml or that could have been 2.56 ng/mol because the data is contradictory. That was with the suppression drug that was not noted to change in dose throughout this period because it was not tested.
HOWEVER that suppression is known to be unreliable so the level of testosterone may have fluctuated during the feeding time. Plus of course, there may have been an interaction with the other drugs.
Here is a doctor's view on this study and male feeding.
https://lascapigliata.com/2018/03/26/analysis-of-study-of-induced-lactation-in-trans-identified-man/
"On presentation, the patient was on a gender-affirming regimen that included spironolactone (a heart medication used in this case as an androgen blocker), estradiol, micronised progesterone and “occasional” clonazepam and zolpidem for panic disorder and insomnia."
"At initial appointment, the patient had gynaecomastia (abnormally enlarged breasts in a man, Tanner stage V) that was likely a side effect of spironolactone and cross-sex hormones he was taking."
"Interestingly, it’s unclear what was the patient’s serum testosterone level, because two markedly different results were given, one in the body of text – 256 ng/dL – and another in the results table 1. – 20.52 ng/dL."
"This is problematic not only because it constitutes a glaring inconsistency within the report, but also because the higher result indicates that the patient had male testosterone levels. Considering that the study reported no further testosterone data, indicating that they didn’t measure his testosterone level at any other point in the study, and that 75% of trans-identified men on spironolactone fail to reach testosterone level in the female range, and those who augment the treatment with estradiol have variable response, there is no reliable evidence that adequate androgen blockade was achieved, even though authors claimed that androgen blockade was an important part of the regimen."
And it goes on.....
Well worth a read