January 2025 in “Biomedicines” High testosterone levels can harm fertility by disrupting the LIF signaling pathway in the uterus.
14 citations
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July 2021 in “Anais brasileiros de dermatologia/Anais Brasileiros de Dermatologia” Interleukin levels are higher in alopecia areata patients but don't predict disease severity or duration.
7 citations
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January 2002 in “Biological Trace Element Research” Children with pituitary dwarfism have higher zinc and copper, lower manganese, and similar iron levels in hair compared to normal children.
September 2019 in “Journal of Investigative Dermatology” Finasteride treatment lowers urine androgen and prostaglandin levels, making them potential markers for effectiveness.
January 1995 in “대한피부과학회지” Higher hormone levels may be linked to female hair loss.
August 2020 in “Research Square (Research Square)” Oxygen levels affect hair growth and color cells differently when they interact directly.
Copper levels in green hair decreased significantly after treatment.
November 2022 in “Journal of the Endocrine Society” Estrogen deficiency can reduce the enzyme activity needed to activate vitamin D.
Raising serum ferritin levels can improve symptoms like fatigue and hair loss, even if hemoglobin levels are normal.
32 citations
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January 1990 in “Clinical Endocrinology” Women with female pattern hair loss have higher levels of certain androgens, suggesting increased androgen exposure to hair follicles.
April 2019 in “Journal of the Endocrine Society” Using LC-MS/MS for hormone measurement can prevent false high testosterone results and avoid unnecessary tests.
36 citations
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June 2012 in “Alcoholism Clinical and Experimental Research” People with decreased kidney function have higher levels of ethyl glucuronide in their hair.
2 citations
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September 2002 in “Journal of Endocrinological Investigation” The GH-IGF-I axis is likely involved in the hormonal imbalances seen in non-obese women with functional hyperandrogenism.
January 2024 in “International Journal of Physics and Applications” Low-level laser therapy can boost cell activity and energy production.
3 citations
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October 2021 in “Clinica Chimica Acta” Hormone levels in hair vary across the head, with the highest concentration of a key hormone linked to hair loss at the top.
Higher levels of certain proteins in hair loss areas may help understand and treat hair loss.
August 1987 in “European journal of endocrinology” The T/SHBG ratio may be a useful marker for androgen activity in women with androgenetic alopecia.
2 citations
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October 2023 in “Philosophical Transactions of the Royal Society B Biological Sciences” Different PADI isoforms help cells develop diverse functions.
21 citations
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November 2010 in “Talanta” Researchers developed a reliable method to measure testosterone and epitestosterone in urine for medical and anti-doping use.
3 citations
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February 2025 in “Endocrine” Confirm testosterone levels with advanced tests to avoid unnecessary procedures.
December 2025 in “Cureus” Higher IL-17A and IL-23 levels are linked to alopecia areata severity and could help in tracking and treating the disease.
25 citations
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April 1972 in “American Journal of Clinical Nutrition” Hair chromium levels show past nutritional status, not environmental exposure.
January 2020 in “International journal of scientific and research publications” Lower SOD enzyme levels are linked to more severe hair loss in men.
May 2021 in “Journal of the Endocrine Society” Transgender females can reach their target estrogen levels using estradiol patches, especially if oral treatments fail or if they're at risk for blood clots. Often, the highest dose patch is needed.
15 citations
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July 1984 in “Nutrition Research” Selenium increased in hair but not in blood after taking supplements.
52 citations
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June 2013 in “The Journal of Clinical Endocrinology and Metabolism” The research found that anovulatory young women have higher androgen and hormone levels than those who ovulate, suggesting immature hormonal regulation rather than a specific condition.
8 citations
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March 2023 in “Journal of Clinical Epidemiology” The updated GRADE guidance advises considering context when interpreting variability in research results and introduces tools for assessing subgroup effects.
April 2018 in “The journal of investigative dermatology/Journal of investigative dermatology” Higher fluence in hair removal damages hair follicles more, while lower fluence mimics natural hair regression, with long-term IPL treatments effectively reducing hair.
78 citations
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August 2012 in “Human molecular genetics online/Human molecular genetics” A new gene, JMJD1C, may affect testosterone levels in men.
July 2025 in “The Egyptian Journal of Hospital Medicine” Estrogen affects hair growth, and GPER-1 levels might help identify hair loss types.