November 2021 in “Zenodo (CERN European Organization for Nuclear Research)” Understanding the 2D:4D digit ratio in vitiligo patients may help in clinical assessments.
49 citations
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January 2006 in “Developmental Dynamics” Noggin gene inactivation causes skeletal defects in mice, varying by genetic background.
2 citations
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November 2025 in “Biomedicines” Platelet- and marrow-derived biologics help heal tissues and reduce infections but need standardized methods for better use.
14 citations
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May 2022 in “Frontiers in Endocrinology” Lower testosterone levels increase kidney stone risk in men over 40.
May 2013 in “Faculty Opinions – Post-Publication Peer Review of the Biomedical Literature” A balance between BMP and Wnt signals is crucial for hair follicle stem cell function and hair growth.
May 2023 in “BMC Women's Health” Many women who have used performance-enhancing drugs in Finland show high rates of mental health and substance use issues, and most have normal red blood cell counts.
1 citations
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January 2024 in “Advances in Orthopedics” PRP injections improve knee function in osteoarthritis.
4 citations
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April 2020 in “Journal of Cosmetic Dermatology” Low vitamin D levels are linked to different types of hair loss.
4 citations
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November 2011 in “Archives of Dermatology” The photographic method for measuring facial hair density is reliable and valid but needs further testing on different hair densities and skin colors.
September 2023 in “Journal of Cosmetic Dermatology” Lower vitamin D levels are linked to higher CRP levels in people with a type of hair loss called alopecia areata.
27 citations
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February 2005 in “Journal of Cellular Biochemistry” Male cells need DHT to respond to testosterone, while female cells do not.
16 citations
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November 2013 in “European Journal of Dermatology” Hair gets thinner and grayer with age, and density decreases more in men on top and in women on top and back.
11 citations
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March 2023 in “Frontiers in Nutrition” Hair analysis can detect small changes in dietary zinc intake.
October 2025 in “Journal of the Endocrine Society” Stopping Viviscal, a hair loss product, normalized the woman's elevated alkaline phosphatase levels.
40 citations
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March 1991 in “Journal of Investigative Dermatology”
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July 2002 in “Molecular Endocrinology” Removing part of the vitamin D receptor stops vitamin D from working properly.
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May 2021 in “Molecules” The hair test for vitamin D could be a useful alternative to blood tests, providing a longer-term vitamin D status, but more research is needed.
June 2018 in “Biomedical Journal of Scientific and Technical Research” Men with lower 2nd to 4th finger ratios tend to have larger sinus volumes.
5 citations
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January 1976 in “Acta Dermato Venereologica” Sodium and potassium levels in Egyptian scalp hair differ by sex and can aid in legal cases.
January 2011 in “Guangdong Medical Journal” Low Vitamin D receptor levels in hair follicles may contribute to alopecia areata.
23 citations
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January 2008 in “Skin Pharmacology and Physiology” Optical coherent tomography can effectively detect steroid use by analyzing hair changes.
Vitamin D receptor actions without binding are crucial for healthy skin and hair.
255 citations
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October 1985 in “The Journal of Clinical Endocrinology & Metabolism” Spironolactone treatment increases the amount of testosterone available in the body.
31 citations
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December 2012 in “British Journal of Dermatology” Korean women's hair thins, weakens, and greys with age, with mineral and sterol changes.
March 2012 in “Journal of The American Academy of Dermatology” White females have higher hair density, while Asian females have thicker hair in hair loss cases.
Men with hair loss may have more body fat and different blood characteristics.
December 2022 in “The Aging Male” Lower 2D:4D ratio and older age increase the risk of severe hair loss in men.
September 2023 in “Journal of the turkish academy of dermatology” Men with male pattern baldness had higher body fat and obesity-related measurements but similar heart fat and artery thickness compared to healthy men.
2 citations
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May 2006 in “Archives of Pathology & Laboratory Medicine” Early recognition of skin lesions in Birt-Hogg-Dubé syndrome is crucial for detecting renal tumors early.
January 1994 in “中医杂志:英文版” Hair trace element levels can guide new treatments for aplastic anemia.