Yeah you're right ahaha. This guy is a professor of neurobiology and ophthalmology at stanford supposedly and has ton a lot of his work with Olympic athletes. I remember him stating a lot of PED users think gyno comes from estrogen but new research shows its actually prolactin. I personally have always had gyno since my puberty years and can even remember having my mom take me to the doctor where he stated it would go away when i was older (it didnt). Its not horrible and my body fat is pretty low but its always been there and will sort of swell up and go back down.
I never see anyone on these forums discuss prolactin which is why his statements caught my attention.