January 2022 in “Journal of Clinical and Diagnostic Research” Using platelet-rich plasma injections and biotin pills together significantly increases hair regrowth in men with hair loss.
November 2021 in “Evidencia” Young patients using finasteride may have higher risks of anxiety, depression, and suicidal thoughts.
October 2021 in “European urology open science” September 2021 in “Chinese Journal of Dermatology” June 2021 in “European Urology” May 2021 in “JAMA Dermatology” Hair loss, not finasteride, is more strongly linked to psychological issues and suicidality.
June 2018 in “Journal of Clinical Periodontology” Finasteride can cause gum swelling and bleeding, but stopping the drug helps recovery.
January 2017 in “Scripta Scientifica Vox Studentium” Finasterid 1mg, used for male hair loss, can cause sexual problems in some men, which can last for several months even after stopping the medication.
August 2015 in “Traditional Chinese Medicine” 
January 1999 in “Journal of S C C J” Certain growth factors regulate hair growth cycles, male hormones affect hair cycles, and drugs like Minoxidil and Finasteride can stimulate hair growth and inhibit male pattern baldness respectively.