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Michael Jackson was 'chemically castrated' by his late dad, claims singer's ex doctor
Entertainment Weekly
...“The fact that he was chemically castrated to maintain his high-pitched voice is beyond words,” Murray continued, echoing a claim he made in his 2016 book, This Is It! The Secret Lives of Dr. Conrad Murray and Michael Jackson, in which he accused Joe of forcing Michael to get hormone injections at age 12 to cure his acne and prevent his voice from changing.
https://www.yahoo.com/entertainment/michael-jackson-apos-chemically-castrated-004406172.html
Joe filed a wrongful death lawsuit against Murray in 2010, but ultimately dropped the case