20 citations
,
January 2019 in “International journal of trichology” People with Alopecia areata often have lower Vitamin D levels, which might affect the severity of their condition.
18 citations
,
February 2020 in “Journal of pharmaceutical and biomedical analysis” The method accurately measures hormones and endocannabinoids in mice, showing gut microbiota diversity affects these levels and may influence stress and reproductive systems.
April 2024 in “Communications biology” Enzymes involved in Vitamin A metabolism affect hair growth and type in mice.
10 citations
,
September 2022 in “Cellular and Molecular Life Sciences” SOX9 is essential for the development of various organs and hair follicles.
4 citations
,
July 2025 in “Annals of the New York Academy of Sciences” Combining skeletal and molecular anthropology improves identifying human remains.
296 citations
,
October 2018 in “General and Comparative Endocrinology” Hair cortisol is a reliable way to measure long-term stress in animals.
38 citations
,
March 2021 in “JAMA Dermatology” People often have negative attitudes toward those with alopecia, especially if it's severe or seen as a medical issue.
21 citations
,
January 2020 in “Conservation Physiology” Hair follicles increase hair cortisol levels, so consistent hair collection methods are important.
16 citations
,
August 2000 in “Il Farmaco” Men have more tryptophan in their hair than women, and it increases with age and is higher in darker and grey or white hair.
10 citations
,
May 2023 in “Journal of Investigative Dermatology” Actinic keratosis is more common in older men with certain genetic traits, but smoking seems to reduce its odds.
7 citations
,
September 2017 in “Biomedical and Pharmacology Journal” Growth factors greatly affect hair loss, with different levels seen in men, women, younger patients, and at the start of the condition.
3 citations
,
February 2023 in “International Journal of Molecular Sciences” Autologous Platelet and Extracellular Vesicle-Rich Plasma (PVRP) has potential in enhancing tissue regeneration and improving hair conditions, but its effectiveness varies due to individual differences.
2 citations
,
April 2025 in “BMC Infectious Diseases” Long COVID affects about 27% of patients, with higher risk for women, lower education, and certain income levels.
November 2025 in “European Journal of Endocrinology” Hair steroid profiling is a feasible, non-invasive alternative to serum analysis for assessing hormone levels and metabolism.
July 2025 in “PNAS Nexus” A new tool accurately identifies human cornea cell states and key factors.
January 2025 in “Scientific Reports” Hair analysis can show changes in vitamin D levels over time.
January 2024 in “Biology of sex differences” Dihydrotestosterone makes arteries stiffer in female mice by reducing estrogen receptor expression.
6 citations
,
December 2011 in “Drug Research” Finasteride's two formulations absorb similarly, showing bioequivalence.
4 citations
,
April 1999 in “Dermatologic Clinics” Androgens, like DHT, affect hair growth and treatments like finasteride may help.
27 citations
,
April 2013 in “Reviews in endocrine and metabolic disorders” The document concludes that using LC-MS/MS for measuring androgens is more accurate than older methods, but it needs careful validation and standardized references to be most effective.
110 citations
,
July 2010 in “Journal of The American Academy of Dermatology” Hair loss linked to higher heart disease risk in both men and women.
44 citations
,
August 2010 in “Journal of Investigative Dermatology” Alopecia areata seriously lowers quality of life, especially affecting self-image, mental health, and social life.
44 citations
,
June 1985 in “Fertility and sterility” Combination drug therapy is effective for hirsutism that doesn't improve with just one medication.
36 citations
,
January 2010 in “Human & experimental toxicology” Eating paradise nuts led to selenium poisoning, causing nausea, hair loss, and other symptoms in two women.
25 citations
,
January 2000 in “Hormone Research in Paediatrics” Mutations in the androgen receptor gene cause Androgen Insensitivity Syndrome, affecting sexual development.
23 citations
,
March 2009 in “Skin Pharmacology and Physiology” Hair loss in men and women is linked to high stress hormone levels and other hormonal imbalances, suggesting treatments should be customized to each person's hormones.
22 citations
,
September 1994 in “The Journal of Clinical Endocrinology and Metabolism” Finasteride reduces dihydrotestosterone, increases testosterone, and may treat hirsutism in women.
14 citations
,
September 2007 in “Steroids” The study concluded that androstendione and DHEA are important for diagnosing high male hormone levels in women with excessive hair growth.
2 citations
,
April 2007 in “Journal of Labelled Compounds and Radiopharmaceuticals” The conclusion is that tritium-labeled testosterone metabolites can be made and are better converted into dihydrotestosterone in skin cells than in prostate tissue.
September 2021 in “Research Square (Research Square)” Certain hormone levels can help diagnose P450 oxidoreductase deficiency.