September 2023 in “Bioscience, biotechnology, and biochemistry” Bacterial communities on scalp hair are unique to each person but consistent across different scalp sites.
10 citations
,
June 2001 in “Annals of neurology” Alzheimer's patients have higher levels of certain chemicals in their hair.
November 2025 in “International Journal of Clinical Obstetrics and Gynaecology” PCOS is likely inherited in families, increasing risk for first-degree relatives.
4 citations
,
January 2016 in “Digital Scholarship - UNLV (University of Nevada Reno)” Insured Hispanics had more dermatology visits, while non-Hispanic Blacks and whites did not, with fewer visits for those with public insurance.
February 2026 in “bonndoc (University of Bonn)” New gene variants were found for rare skin and hair disorders, improving understanding and treatment.
2 citations
,
December 2022 in “International journal of molecular sciences” Plucked hairs can be used instead of skin biopsies to study hair traits because they contain specific cells related to hair.
115 citations
,
September 2005 in “International Journal of Dermatology” Different ethnic groups have unique hair growth patterns, with African hair growing slower and less dense, Asian hair growing fast but sparse, and Caucasian hair being densest; men are more likely to experience hair loss than women.
September 2000 in “PubMed”
8 citations
,
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.
35 citations
,
June 2011 in “British Journal of Dermatology” The DQB1*03 allele is linked to higher alopecia areata risk in Italians.
8 citations
,
October 2019 in “Immunological investigations” The AIRE gene variant rs2075876 is linked to a higher risk of alopecia areata in males.
33 citations
,
September 1987 in “American Journal of Medical Genetics” Uncombable hair is inherited dominantly with complete penetrance.
69 citations
,
January 2005 in “The Journals of Gerontology Series A” Short telomeres may cause symptoms like hair loss and osteoporosis, offering insights into aging.
February 2018 in “Medical Hypotheses” Male pattern hair loss may have evolved to promote younger fathers for offspring health and survival, encouraging monogamy and paternal nurturing.
April 2018 in “Journal of Investigative Dermatology” Differentiated fibroblasts regenerate hair follicles better than undifferentiated ones.
July 2016 in “Journal of Cutaneous Medicine and Surgery” Receding hairlines in men are uneven, with the right side larger than the left.
July 2024 in “Nursing Research” Hair and nail cortisol levels can show long-term stress in young males.
March 2024 in “Jagiellonian University Repository (Jagiellonian University)” Genetic and lifestyle factors influence skin and hair aging, and prediction models can help assess aging and cosmetic treatments.
July 2025 in “Journal of Investigative Dermatology” Secreted inhibitors of Wnt and IGF signaling control hair and tooth development, creating species-specific patterns.
17 citations
,
December 2020 in “Journal of Genetic Counseling” Genetic counselors should be culturally skilled and aware of transgender patients' unique health risks and needs.
April 2024 in “Journal of clinical medicine” Classical PCOS types A and B are most common and linked to higher health risks.
1 citations
,
November 2024 in “European Journal of Endocrinology” Higher childhood DHEAS levels are linked to advanced puberty and DNA changes.
38 citations
,
January 2012 in “Journal of Korean Medical Science” Early-onset alopecia, especially with a family history, leads to worse outcomes and more related health issues.
November 2025 in “Annals of Dermatology” Alopecia Areata affects young adults more in high-income countries, especially females.
Hairlessness in mammals is caused by combined changes in genes and regulatory regions.
January 2026 in “Frontiers in Molecular Biosciences” A new method helps diagnose alopecia areata using specific gene markers and could guide targeted treatments.
40 citations
,
January 2013 in “Frontiers in Endocrinology” Finger length ratios are not linked to the number of specific gene repeats affecting testosterone sensitivity.
6 citations
,
August 2024 in “BMC Ophthalmology” New genetic variants linked to albinism were found in Pakistani families.
85 citations
,
June 2015 in “Scientific Reports” The study found that diseases can be grouped by symptoms and that the accuracy of predicting disease-related genes varies with the data source.
September 2023 in “Journal of the American Academy of Dermatology” Hispanic and Black patients are underrepresented in alopecia areata clinical trials.