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.
102 citations
,
July 2020 in “International journal of molecular sciences” Hormones like testosterone and estrogen significantly affect hair growth and structure.
66 citations
,
May 2014 in “Conservation Physiology” Grizzly and black bears have different stress and hormone responses to salmon availability, influenced by nutrition and social competition.
48 citations
,
January 2015 in “Indian Journal of Dermatology, Venereology and Leprology” Vitamin D is important for skin health and can help treat psoriasis, atopic dermatitis, and vitiligo.
36 citations
,
May 2020 in “Journal of the European Academy of Dermatology and Venereology” Dermatologists should watch for skin symptoms in COVID-19 patients, prioritize urgent cases, and use telemedicine.
28 citations
,
August 2019 in “BMC Genetics” miR-148a and miR-10a affect hair growth in Hu sheep.
16 citations
,
April 1998 in “Journal of Investigative Dermatology” ACTH promotes hair growth in mink, but α-MSH does not.
8 citations
,
January 2012 in “General and Comparative Endocrinology” 5α-Reductase helps regulate hormone action in toad testes, especially during breeding season.
4 citations
,
March 2025 in “Pediatric Dermatology” Pediatric alopecia areata needs more research to understand its characteristics and related conditions.
2 citations
,
June 2023 in “Plants” Sugars from Sargassum and brown algae may have health benefits like fighting viruses and helping with wound healing, but there are challenges in using them.
1 citations
,
April 2023 in “Animals” Deleting the EDAR gene in Cashmere goats affects genes and proteins related to hair growth.
November 2025 in “Journal of Clinical Medicine” Alopecia areata patients should have eye check-ups due to increased risk of eye problems.
April 2025 in “Journal of the International Society of Sports Nutrition” Creatine does not cause hair loss.
January 2025 in “Conservation Physiology” Bear hair grows 0.10 to 1.05 mm per day, varying by individual and season.
December 2024 in “PLoS ONE” Alopecia in gray bats is most common and severe during lactation, likely due to stress and nutrition.
April 2021 in “Indian Journal of Animal Research” Goat skin has collagen, elastic, and reticular fibers, with hair follicles increasing in depth as goats age.
March 2024 in “Clinical, cosmetic and investigational dermatology” Skin Radiance Collagen improved skin and hair health in adult females.
1 citations
,
September 2013 in “Mayo Clinic Proceedings” A woman's hair loss was treated successfully with iron supplements for her iron deficiency.
October 2017 in “The Indian Journal of Animal Sciences” The prolactin gene polymorphism doesn't affect cashmere quality in these goats.
98 citations
,
December 2008 in “Journal of Investigative Dermatology” Prolactin affects hair growth and skin conditions, and could be a target for new skin disease treatments.
13 citations
,
September 2018 in “Scientific Reports” The research found that a complex gene network, controlled by microRNAs, is important for hair growth in cashmere goats.
2 citations
,
January 2014 in “Hair therapy & transplantation” New treatments for hair growth disorders are needed due to limited current options and complex hair follicle biology.
56 citations
,
January 2001 in “Dermatology” Teloptosis is a key point in hair loss that could help in creating prevention-focused hair care strategies.
3 citations
,
May 2021 in “British Journal of Dermatology” The COVID-19 pandemic led to fewer skin checks and skin cancer diagnoses in Australia in 2020.
April 2018 in “Journal of Investigative Dermatology” Researchers found a substance in chicken egg yolk that helps hair grow.
April 2018 in “Journal of Investigative Dermatology” Light can activate hair growth through a pathway from the eyes to hair follicles.
April 2018 in “Journal of Investigative Dermatology” People with alopecia areata have higher levels of a heart disease marker in their blood.
April 2018 in “Journal of Investigative Dermatology” Sensitive scalp has higher pH, more redness, abnormal sebum, and altered bacterial makeup.
224 citations
,
March 2006 in “Seminars in Cutaneous Medicine and Surgery” The document concludes that understanding hair follicle biology can lead to better hair loss treatments.
116 citations
,
May 2013 in “Proceedings of the National Academy of Sciences of the United States of America” Hair grows faster in the morning and is more vulnerable to damage from radiation due to the internal clock in hair follicle cells.