September 2018 in “International Journal of Dermatology” People with alopecia areata often have lower levels of zinc and vitamin D.
44 citations
,
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.
14 citations
,
January 2020 in “Advances in Dermatology and Allergology” Higher interleukin-15 levels are linked to more severe alopecia areata, but not to age or gender.
2 citations
,
March 2023 in “3C Empresa Investigación y pensamiento crítico” Alopecia areata patients have higher IFN-γ and low vitamin D3 levels.
2 citations
,
April 2019 in “Acta medica Philippina/Acta Medica Philippina” People with alopecia areata often have lower vitamin D levels than healthy people.
September 2025 in “Journal of Dhaka Medical College” Lower vitamin D levels are linked to more severe alopecia areata.
April 2025 in “Egyptian journal of Immunology” Calprotectin levels are higher in alopecia areata patients, indicating systemic inflammation.
33 citations
,
December 2015 in “Neuroendocrinology” Finasteride treatment changes brain steroid levels and receptors, affecting brain function even after stopping treatment.
83 citations
,
April 1992 in “Clinical Endocrinology” Having enough iron improves the effectiveness of a specific hair loss treatment in women.
1 citations
,
October 2024 in “Cureus” Women with PCOS have higher irisin levels, which may affect their metabolism and hormones.
February 2022 in “Global academic journal of medical sciences” People with alopecia areata have much lower Vitamin-D levels than healthy individuals.
Women with androgenetic alopecia (hair loss) have normal prostate specific antigen levels but higher testosterone levels.
December 2025 in “Frontiers in Endocrinology” High chromogranin A levels are linked to obesity and inflammation in polycystic ovary syndrome.
February 2020 in “Benha Journal of Applied Sciences” Insulin resistance and nesfatin-1 are linked to acne severity.
32 citations
,
January 1990 in “Clinical Endocrinology” Women with female pattern hair loss have higher levels of certain androgens, suggesting increased androgen exposure to hair follicles.
5 citations
,
August 2018 in “Sexual Medicine Reviews” 5α-Reductase inhibitors do not consistently increase testosterone levels in the blood.
April 2026 in “Al-Kufa University Journal for Biology” Finasteride lowers cortisol and raises testosterone levels in rats.
July 2022 in “Research Square (Research Square)” Lower PPARγ levels and specific gene variations are linked to more severe Frontal Fibrosing Alopecia.
March 2022 in “VNU Journal of Science Medical and Pharmaceutical Sciences” A new method accurately measures nine steroid hormones in human serum with high sensitivity.
61 citations
,
April 2014 in “The Journal of Steroid Biochemistry and Molecular Biology” Finasteride affects brain and blood steroids, causing lasting sexual and emotional side effects.
78 citations
,
August 2012 in “Human molecular genetics online/Human molecular genetics” A new gene, JMJD1C, may affect testosterone levels in men.
November 2020 in “Acta Scientific Women's Health” Low vitamin D levels can significantly contribute to hair loss, especially in women aged 35-45. Correcting these levels early may help prevent and treat this condition.
4 citations
,
March 2018 in “PloS one” Men with less sun-sensitive skin have lower PSA levels, while men with more sun-sensitive skin have higher PSA levels.
3 citations
,
April 2019 in “Hormone and Metabolic Research” Women with PCOS have lower adiponectin hormone levels and are more likely to have insulin resistance.
38 citations
,
January 2011 in “Endocrine Journal” Weight loss and metformin don't significantly change vaspin levels in women with PCOS.
9 citations
,
February 2020 in “International Journal of Endocrinology” Some men with early hair loss may have a male version of PCOS, affecting hormones and increasing health risks.
43 citations
,
January 2007 in “Gynecological Endocrinology” Finasteride improves acne and hair loss in women with normal testosterone.
2 citations
,
October 2024 in “Endocrine Connections” Lower adiponectin levels are linked to higher insulin resistance in women with PCOS.
93 citations
,
June 2001 in “The Journal of Clinical Endocrinology and Metabolism” Certain genetic variations in the AR and ERβ genes can affect androgen levels in women.
2 citations
,
May 2022 in “Diagnostics” Vitamin D levels in hair don't match those in blood, so hair isn't a reliable indicator of Vitamin D status.