He may be referring to the twin study that is always talked about.
One twin was castrated while very young, the other was not.
The normal twin developed mpb gradually over time, while the castrated twin kept all of his hair.
Later, like in middle age, the castrated twin was given testosterone and developed mpb rapidly and caught up with his brother in like 6 months...or so the story goes...
One twin was castrated while very young, the other was not.
The normal twin developed mpb gradually over time, while the castrated twin kept all of his hair.
Later, like in middle age, the castrated twin was given testosterone and developed mpb rapidly and caught up with his brother in like 6 months...or so the story goes...
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