June 1937 in “Science news-letter/Science news letter” Vitamin B can prevent hair from turning gray in rats.
109 citations
,
October 2007 in “American Journal of Human Genetics” Giving a special protein to dogs with a certain genetic disease improved their symptoms but didn't help with hair growth.
43 citations
,
October 1955 in “The journal of nutrition/The Journal of nutrition” Germ-free rats need biotin for growth and have different vitamin metabolism compared to regular rats.
29 citations
,
March 2011 in “The Journal of Nutritional Biochemistry” Eating isoflavone can help mice grow hair by increasing a growth factor.
14 citations
,
April 2014 in “Medical Clinics of North America” The document concludes that quick referral and appropriate treatments are crucial for managing common skin conditions and preventing permanent damage.