5 citations
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August 2018 in “Sexual Medicine Reviews” 5α-Reductase inhibitors do not consistently increase testosterone levels in the blood.
163 citations
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November 2003 in “Journal of Investigative Dermatology” Low iron levels may be linked to some types of hair loss in women.
83 citations
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November 2002 in “British Journal of Dermatology” Low iron levels are not directly linked to chronic hair loss and iron supplements may not help.
65 citations
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January 2009 in “Annals of Dermatology” Zinc supplements increased zinc levels in some hair loss patients but didn't significantly improve hair growth.
44 citations
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April 2008 in “The Journal of Clinical Endocrinology & Metabolism” Women with PCOS have similar levels of certain proteins compared to women without PCOS, and these proteins don't independently cause PCOS.
37 citations
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March 2014 in “Journal of Trace Elements in Medicine and Biology” Lower hair zinc and copper levels found in Turkish males with hair loss; higher BMI linked to less hair zinc.
30 citations
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August 1992 in “The Journal of Clinical Endocrinology and Metabolism” Finasteride doesn't affect hormone levels in normal men.
21 citations
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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.
20 citations
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April 2012 in “Fertility and Sterility” Finasteride causes lasting fertility decrease in rats.
9 citations
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April 2006 in “American Journal of Pathology” SGK3 is essential for proper hair growth and health.
9 citations
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November 2003 in “Journal of Investigative Dermatology” Low serum ferritin levels are linked to hair loss in women.
8 citations
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June 2020 in “International Journal of Dermatology” Men with early hair loss have lower vitamin D levels.
7 citations
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January 2017 in “Journal of Clinical Biochemistry and Nutrition” Higher vitamin D levels are linked to higher iron levels in Korean women without metabolic syndrome, but not in those with it.
6 citations
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May 2016 in “Urolithiasis” Balding and low testosterone increase risk of urinary stones.
4 citations
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July 2019 in “IOP conference series” Most young men with early gray hair have low vitamin D but normal iron levels.
3 citations
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June 2019 in “Journal of Bangladesh Society of Physiologist” People with hair loss often have lower levels of zinc and copper in their blood.
3 citations
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January 2000 Some alternative therapies for vitiligo show promise but need more research.
2 citations
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September 2015 in “Journal of the Egyptian Women's Dermatologic Society (Print)” People with psoriasis and depression have lower BDNF levels, which could help measure depression in those with psoriasis.
2 citations
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September 2012 in “Turk Dermatoloji Dergisi” Low levels of ferritin and vitamin B12 are common in women with telogen effluvium, but the link between nutrient deficiencies and the condition is not clear.
1 citations
,
September 2016 in “Springer eBooks” Sebum production varies by individual and is influenced by age, gender, and hormones, affecting skin and hair health.
Lower vitamin D levels are linked to more severe hair loss in men.
October 2025 in “International Journal of Social health” Finasteride lowers PSA levels and prostate size, requiring adjusted PSA interpretation for accurate cancer screening.
June 2024 in “Archives of dermatological research” Dietary supplements might help prevent post-COVID hair loss, but serum ferritin is not a reliable indicator.
February 2024 in “International Journal of Research in Dermatology” Thyroid tests may not be needed for all vitiligo and alopecia areata patients unless thyroid disease symptoms appear.
January 2024 in “Journal of the Endocrine Society” The research found that measuring androgens in urine can give extra information about body metabolism and is linked to androgen levels in the blood, especially in young girls.
May 2023 in “Bali Medical Journal” Higher sebum levels are linked to more severe male baldness.
November 2022 in “SAS journal of medicine” There's no link between low iron levels and the hair loss condition, alopecia areata.
July 2022 in “Al-Mağallaẗ al-ʻirāqiyyaẗ li-l-ṣaydalaẗ” Lower zinc levels are linked to more severe hair loss in alopecia areata.
June 2019 in “Journal of Akhtar Saeed Medical & Dental College” Prolactin levels are higher in women with hirsutism but don't relate to its severity.
August 2018 in “Journal of the American Academy of Dermatology” Calcipotriol may effectively treat hair loss in alopecia areata, working better in children than adults.