36 citations,
September 2009 in “European journal of paediatric neurology” Valproic acid treatment may cause temporary hair loss due to reduced zinc and biotinidase levels, which tend to normalize after 6 months.
32 citations,
August 1999 in “Journal of Investigative Dermatology” Early onset hair loss linked to genetics and androgen levels.
30 citations,
August 1992 in “The Journal of Clinical Endocrinology and Metabolism” Finasteride doesn't affect hormone levels in normal men.
29 citations,
March 2010 in “Journal of Endocrinological Investigation” Lipocalin-2 levels are higher in women with PCOS and may indicate insulin resistance.
28 citations,
April 2017 in “Journal of cosmetic dermatology” Low vitamin D can worsen pediatric alopecia areata.
26 citations,
October 2011 in “Biological trace element research” Low copper levels might cause premature graying of hair.
23 citations,
June 2019 in “Bioanalysis” Monitoring steroid hormones in blood can better detect testosterone doping.
23 citations,
February 2017 in “Journal of dermatology” Low serum levels of zinc and selenium may increase the risk of alopecia areata.
23 citations,
July 2016 in “International Journal of Trichology” 22 citations,
June 2009 in “Brain & development” Biotin supplements increased biotin levels but did not significantly prevent hair loss in rats on valproic acid.
21 citations,
January 2014 in “Dermatology Research and Practice” Hair and serum levels of zinc, copper, and iron are similar in people with alopecia areata and healthy individuals.
21 citations,
January 2009 in “Indian journal of dermatology, venereology, and leprology” Vitamin B12, folate, ferritin, and iron levels are not linked to alopecia areata.
19 citations,
June 2018 in “Clinical cardiology” Older men with low levels of a testosterone byproduct had a higher chance of developing an irregular heartbeat.
18 citations,
October 2015 in “Clinical Endocrinology” Women with PCOS have higher levels of a certain growth factor, which can be reduced by taking metformin.
18 citations,
November 1998 in “Comparative biochemistry and physiology. Part A, Molecular & integrative physiology” Changes in prolactin and DHEA levels are not required for the start of mink hair growth cycles.
17 citations,
January 2013 in “Indian Journal of Pharmacology” High levels of the seizure medication sodium valproate can cause hair loss.
17 citations,
January 1997 in “Cell and Tissue Research” Scientists developed a method to grow human fetal skin and digits in a lab for 3-4 weeks, which could help study skin features and understand genetic interactions in tissue formation.
16 citations,
May 2009 in “Journal of child neurology” Valproic acid does not change biotinidase enzyme activity in children's blood.
16 citations,
January 2000 in “The Journal of clinical endocrinology and metabolism/Journal of clinical endocrinology & metabolism” Antiandrogen drugs can reduce PSA levels in women with excess hair, suggesting PSA is a sign of male hormone activity in women.
15 citations,
January 2016 in “International journal of trichology” Low vitamin D3 levels are significantly linked to hair loss, especially in female students.
15 citations,
September 2006 in “Brain & development” Valproic acid may cause hair loss by reducing biotinidase enzyme activity in rats.
14 citations,
January 2013 in “Journal of the Egyptian Women's Dermatologic Society /Journal of the Egyptian Women's Dermatologic Society” 13 citations,
May 2012 in “Cutaneous and ocular toxicology” Alopecia areata is not linked to vitamin B12 deficiency.
11 citations,
February 2019 in “Journal of Cosmetic Dermatology” Low zinc and biotin levels linked to male hair loss; supplements may help.
11 citations,
January 2014 in “Egyptian Journal of Dermatology and Venereology” Women losing hair might have lower levels of vitamin D.
11 citations,
October 1994 in “The Journal of Clinical Endocrinology and Metabolism” Finasteride increases hair growth, prolongs hair cycle, and lowers dihydrotestosterone levels.
10 citations,
May 2017 in “PLOS ONE” Men and premenopausal women in Korea show different patterns in iron and vitamin D levels, with no clear pattern for postmenopausal women.
10 citations,
August 2014 in “Skin research and technology” Sleep, testosterone levels, and a specific enzyme activity affect skin oil production in women.
10 citations,
September 2007 in “International Journal of Andrology” A combination of nanomilled oral testosterone and dutasteride normalized testosterone levels in men with low testosterone and is safe for short-term use.
10 citations,
December 1996 in “Fertility and Sterility” Women with acne have lower levels of a specific hormone marker than women without acne.