40 citations,
September 2019 in “World journal of clinical cases” An elderly man's hair grew back after a treatment that transferred healthy gut bacteria.
Biotin does not significantly help with hair growth.
Different genes cause Female Pattern Hair Loss compared to male hair loss, and treatments vary, but more research is needed to understand it fully.
January 2020 in “Kocatepe Tıp Dergisi” Not all hair loss patients need lab tests; patient history and physical exams are key to deciding who does.