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January 2015 in “The Journal of Steroid Biochemistry and Molecular Biology” Progesterone byproduct 5αP stimulates mammary tumor growth, but finasteride can suppress it.
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September 2022 in “International Journal of Trichology” Tofacitinib can be effective in treating hair loss caused by alopecia areata.
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Baricitinib helped treat a man's beard hair loss when steroids didn't work.
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September 2015 in “Gene” FGF5s can block the effects of FGF5, which may help control hair growth in cashmere goats.
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January 2003 in “Chemical and Pharmaceutical Bulletin” The new progesterone derivatives effectively inhibit 5α-reductase and bind to the androgen receptor.