October 2025 in “Journal of Veterinary Diagnostic Investigation” Black hair in cats has higher cortisol levels than white hair.
September 2025 in “Tạp chí Da liễu học Việt Nam” 2.5 mg/mL TAC is as effective and safe as 5 mg/mL, but 5 mg/mL may improve hair regrowth and density more.
Hair hormone levels can indicate stress after a medically indicated abortion.
Zinc levels and lymphocyte counts might be important in heart disease development.
February 2024 in “Psychoneuroendocrinology” The COVID-19 pandemic did not significantly change stress levels in preschoolers, but higher-income families' children showed higher stress.
November 2023 in “Journal of animal science/Journal of animal science ... and ASAS reference compendium” Pig hair cortisol levels are inheritable and linked to stress responses, which could help select for more resilient pigs.
October 2023 in “Acta dermato-venereologica (Print)” People with severe hair loss have lower zinc levels in their blood.
Different androgen concentrations affect wool-related gene expression differently in Hetian and Karakul sheep breeds.
September 2021 in “Psychoneuroendocrinology” Nurses had higher stress levels during intense phases of the COVID-19 pandemic.
May 2021 in “Journal of the Endocrine Society” Adolescents with PCOS have higher levels of certain androgens, which are linked to hair growth but don't help diagnose PCOS better than testosterone levels.
June 2020 in “Authorea (Authorea)” First-time mothers had higher stress hormone levels in late pregnancy than mothers who had given birth before.
Distal hair cortisol is not a reliable measure of early pregnancy cortisol levels.
High-stress mothers had lower hair cortisol than low-stress mothers, and daughters' cortisol was linked to their stress response.
July 2014 in “Zenodo (CERN European Organization for Nuclear Research)” Imbalances in magnesium and calcium are linked to health and behavior issues.
January 2011 in “Hebei yixue” The 0.1% finasteride nanoparticles are efficient, uniform, and stable.
EGF helps goat hair stem cells grow best at 15 ng/mL.
March 2003 in “BJOG: An International Journal of Obstetrics and Gynaecology” Mothers and newborns with dental fillings have higher mercury in their hair, but adding fillings during pregnancy doesn't raise mercury levels further.
September 2021 in “Ukraïnsʹkij žurnal medicini, bìologìï ta sportu” PRP treatment reduces inflammation and increases interleukin-10 in alopecia areata patients.
64 citations
,
April 1972 in “American Journal of Clinical Nutrition” Hair chromium levels reflect nutritional status after standard washing.
15 citations
,
June 1996 in “Journal of Pharmacy and Pharmacology” Caffeine levels in hair and blood can indicate liver health.
10 citations
,
June 2013 in “International Journal for Vitamin and Nutrition Research” High hair calcium levels are linked to low calcium intake and low bone density.
7 citations
,
October 2024 in “Drug Delivery and Translational Research” A 4% nanoparticle concentration and 4 Hz massage improve drug delivery into hair follicles.
4 citations
,
January 2011 in “Chinese Herbal Medicines” Improving wogonin's solubility greatly increases its absorption in the body.
3 citations
,
June 1979 in “The Journal of Dermatology” Glycosaminoglycan levels peak early in hair growth and decrease as the cycle progresses.
November 2025 in “Anxiety Stress & Coping” Higher anxiety symptoms and social behavior affect stress levels in hair.
July 2025 in “International Journal of Dermatology Venereology and Leprosy Sciences” Higher stress levels may worsen alopecia areata, suggesting stress management is important for treatment.
September 2010 in “European Urology Supplements” Serum triglyceride levels are not linked to prostate cancer risk.
157 citations
,
June 2015 in “Psychoneuroendocrinology” Hair cortisol and cortisone levels increase with age, are higher in diabetics, vary by gender, decrease with frequent hair washing, and are lower in winter.
118 citations
,
October 2014 in “Journal of Dairy Science” Tail switch hair is best for measuring cortisol in Holstein cows, with white hair and multiparous cows showing higher levels.
89 citations
,
December 2006 in “Lancet Oncology” Taking 1 mg/day finasteride for hair loss significantly lowers PSA levels in men, which may affect prostate cancer screening.