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December 2018 in “Indian journal of paediatric dermatology” Kids with alopecia areata had lower vitamin D levels than healthy kids.
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November 2014 in “Journal of Biomedical Optics” Reflectance spectroscopy can noninvasively track hair growth stages by measuring skin reflectance and melanin changes.
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January 2007 in “Journal of Obesity & Metabolic Syndrome” A higher calcium to magnesium ratio in hair is linked to lower insulin sensitivity.
April 2026 in “European Journal of Medical and Health Research” Women with hair loss had lower IGF-1 levels.
March 2026 in “Nutrients” Hair manganese may relate to cardiometabolic health, not coronary artery disease severity.
January 2026 in “International Journal of Pharmaceutical Quality Assurance” Alopecia Areata patients have low zinc and high copper levels.
December 2025 in “Reports of Vinnytsia National Medical University” Alopecia areata affects life quality differently based on its severity.
September 2025 in “Journal of Dhaka Medical College” Lower vitamin D levels are linked to more severe alopecia areata.
June 2025 in “Animal Bioscience” miRNA-24 affects goat coat color by controlling proteins involved in pigment production.
February 2025 in “International Journal of Cosmetic Science” Protein carbonylation is a sensitive marker for oxidative damage in hair, especially from light exposure.
December 2024 in “Medicine” Gut bacteria may affect hair loss risk.
May 2024 in “International journal of medicine and psychology.” Depression worsens eczema severity, increases inflammation, and lowers quality of life.
May 2024 in “Journal of trace elements in medicine and biology” Overweight or obese women before pregnancy have lower iron levels in their serum and hair during early pregnancy.
January 2024 in “International journal of chemical research and development (Print)” Low levels of vitamin B12, iron, ferritin, and zinc are linked to hair loss in Iraqi women.
June 2023 in “Annals of the College of Medecine” Low iron levels are linked to more hair loss in women with chronic hair shedding.
April 2023 in “Journal of Investigative Dermatology” Aging changes skin cells, leading to different DNA methylation and gene activity, affecting cell metabolism and aging signs.
January 2023 in “Journal of men's health” Higher dihydrotestosterone may be linked to more inflammation in COVID-19 patients with low testosterone.
July 2022 in “Al-Mağallaẗ al-ʻirāqiyyaẗ li-l-ṣaydalaẗ” People with Alopecia Areata often have lower zinc levels, and more hair loss is linked to even lower zinc levels.
July 2022 in “Al-Mağallaẗ al-ʻirāqiyyaẗ li-l-ṣaydalaẗ” Lower zinc levels are linked to more severe hair loss in alopecia areata.
June 2020 in “Risk Management and Healthcare Policy” Drinking alcohol 1-2 times a week may reduce urinary symptoms, but drinking more often might increase the risk.
September 2018 in “International Journal of Dermatology” People with alopecia areata often have lower levels of zinc and vitamin D.
April 2017 in “The journal of investigative dermatology/Journal of investigative dermatology” Researchers found that certain miRNAs, which affect immune system regulation, are differently expressed in mice with a hair loss condition compared to healthy mice.
April 2016 in “Journal of Investigative Dermatology” Vitamin D can reduce skin inflammation caused by UV rays by enhancing cell "fitness" and skin repair.
Reviewers criticized the study for assuming drugs with similar side-effects work the same way and questioned the validity of its findings due to potential biases and data quality issues.
The study improved and was accepted despite initial concerns about data clarity, methodology, and potential overfitting.
January 2015 in “Indian Journal of Medical Biochemistry” Men with early balding should be checked for metabolic syndrome, as there's a link between the two.
June 2014 in “British Journal of Dermatology” Eczema patients have a lower skin lipid to protein ratio, older and longer-staying hospital patients are more likely to get pressure ulcers, hair loss in AGA is linked to muscle degeneration, vitamin D deficiency is common in alopecia areata and linked to its severity, standard liver tests don't effectively detect fibrosis in psoriasis patients on methotrexate, and bullous pemphigoid patients have a higher death risk but combination therapy may reduce it.
Different treatments change the strength and flexibility of human hair.
April 2016 in “The Journal of Sexual Medicine” PFS affects some women, steroids easily bought online, hypogonadism info unreliable, low testosterone linked to CVD.
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September 1979 in “Acta Paediatrica” Girls have higher DHEA levels earlier in puberty than boys, indicating earlier development.