37 citations
,
  September 2018   in “Psychoneuroendocrinology”    Finasteride treatment in male rats causes long-lasting effects on depression-like behavior, brain cell growth, inflammation, and gut bacteria composition.  
     
           18 citations
,
  March 2020   in “Frontiers in Neuroendocrinology”    The enzymes 5α-reductase and 3α/β-hydroxysteroid oxidoreductase help create brain-active substances from progesterone and testosterone, which could be used for treatment, but more research is needed to ensure their safety and effectiveness.  
     
           22 citations
,
  March 2000   in “Clinics in Dermatology”    Many treatments for hair loss lack proper testing and FDA approval, so their effectiveness is uncertain.  
     
    Avicennia marina extract and avicequinone C can potentially promote hair growth and treat hair loss by interfering with hair loss mechanisms and boosting growth factors.  
     
           49 citations
,
  January 2004   in “Journal of steroid biochemistry and molecular biology/The Journal of steroid biochemistry and molecular biology”    Selective non-steroidal inhibitors of 5α-reductase type 1 can help treat DHT-related disorders.