53 citations,
March 2014 in “Growth Hormone & IGF Research” IGF-1 injections help mice grow more hair by increasing cell growth and blocking a hair growth inhibitor.
53 citations,
September 2013 in “Journal of Investigative Dermatology” Hair follicle cells help protect against immune attacks by regulating T-cell activity.
53 citations,
May 2010 in “Journal of Cellular Physiology” Mice without Vitamin D receptors have hair growth problems because of issues in the hedgehog signaling pathway.
53 citations,
January 2009 in “Journal of Investigative Dermatology” UVB radiation harms hair growth and health, causing cell death and other changes in human hair follicles.
53 citations,
January 2007 in “Dermatology” Chemotherapy often causes patterned hair loss, with some scalp areas more resistant to hair loss than others.
53 citations,
November 2006 in “Journal of Endocrinology” Prolactin slows down hair growth in mice.
53 citations,
November 1997 in “Journal of Forensic Sciences” Darker hair in guinea pigs holds more codeine than lighter hair.
53 citations,
May 1990 in “Journal of Dermatology” Minoxidil speeds up hair growth in rats without prolonging growth phase.
53 citations,
May 1986 in “Clinics in endocrinology and metabolism” Androgens like testosterone affect hair growth and oil production differently across body parts and individuals.
52 citations,
September 2018 in “International Journal of Molecular Sciences” Ginseng and its compounds may help hair growth and prevent hair loss, but more human trials are needed to confirm this.