Observing someone's physical appearance can give hints about their health, hygiene, and potential medical conditions.
Hirsutism is common in young females and may signal underlying hormonal issues.
13 citations
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March 2020 in “Spectrochimica Acta Part A Molecular and Biomolecular Spectroscopy” Alopecic hair has more irregular structures and chemical changes than normal hair, reducing its strength.
2 citations
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July 2005 in “Journal of The American Academy of Dermatology” June 2025 in “British Journal of Dermatology” Certain hair and scalp features can predict the severity of alopecia areata.
47 citations
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January 2001 in “Journal of Investigative Dermatology” High testosterone to epitestosterone ratio in hair could predict male-pattern baldness.
1 citations
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December 2018 in “Journal of Pakistan Association of Dermatology” Dermoscopy is useful for diagnosing different types of hair loss.
January 2019 in “Figshare” Redheaded people have higher levels of vitamin D precursor, suggesting their hair color may be an adaptation to low sunlight areas.
42 citations
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December 1990 in “The Journal of Dermatologic Surgery and Oncology” The study found that horizontal sections of scalp biopsies are better for analyzing hair loss, showing fewer hairs and more fine hairs in balding areas.
3 citations
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May 2022 in “Clinical endocrinology” Hair steroid measurement is an effective method to diagnose and monitor CAH in developing countries.
January 2025 in “Arquivo Brasileiro de Medicina Veterinária e Zootecnia” Agoutis in captivity have more resting (telogen) hairs than growing (anagen) hairs, regardless of season or gender.
10 citations
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June 2013 in “International Journal for Vitamin and Nutrition Research” High hair calcium levels are linked to low calcium intake and low bone density.
January 2014 in “NDSU Repository (North Dakota State University)” The hair-pulling scale needs improvement for better accuracy and consistency.
2 citations
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April 2025 in “Dermatology and Therapy” Alopecia areata affects quality of life more in adolescents than adults.
7 citations
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June 2018 in “Journal of the American Academy of Dermatology” The document suggests finding a simpler, cheaper way to diagnose Uncombable Hair Syndrome.
33 citations
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January 2013 in “Dermatology” Over half of the adult women with acne in the study had higher than normal levels of male hormones, especially DHEA.
October 2023 in “Journal of the European Academy of Dermatology and Venereology” Patients with skin diseases rated psychological effects as most impactful, needing a treatment approach that addresses both mind and body.
137 citations
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July 2004 in “Journal of The American Academy of Dermatology” Horizontally sectioned scalp biopsies are more reliable for diagnosing hair loss in women when three samples are taken instead of one.
86 citations
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January 2020 in “British Journal of Dermatology” The AA-IGA scale reliably measures treatment success in alopecia areata by considering both clinician and patient views.
1 citations
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June 2006 in “Experimental dermatology” The conclusion suggests that early signs of hidradenitis suppurativa may start in the hair follicle, with genetic and immune factors playing a role, highlighting the need for more research on the hair follicle's immune system.
1 citations
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October 2024 in “International Journal of Obesity”
110 citations
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April 2002 in “The Journal of clinical endocrinology and metabolism/Journal of clinical endocrinology & metabolism” Dihydrotestosterone gel improved well-being and sexual function in older men without negatively affecting prostate health.
January 2020 in “Turk Dermatoloji Dergisi” Men with baldness, ear creases, and hairy ears have a higher risk of heart disease.
December 2025 in “ILDS-DEV” 1 citations
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September 2021 Many people don't know what's in their hair products, and most haven't tried ginger hair masks.
6 citations
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January 2010 in “PubMed” Scalp psoriasis is linked to impaired hair growth with more hair in the resting phase.
1 citations
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January 2012 in “CINECA IRIS Institutial research information system (University of Pisa)”
27 citations
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September 2012 in “Dermatologic Clinics” The document concludes that using specific tools and tests is essential for identifying the cause of hair loss and deciding on the right treatment.
1 citations
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January 2021 in “Pakistan journal of zoology” Red fox, golden jackal, and gray wolf hairs have similar features but differ in length, thickness, and inner structure.
January 2018 in “Hair therapy & transplantation” Hair health can indicate mental and general health.