June 2026 in “International Journal of Drug Delivery Technology” Herbal remedies show promise for managing premature hair greying but need more research.
April 2026 in “Annals of Medicine” Low vitamin D levels are linked to Alopecia Areata.
The human scalp has different types of pigment cells in hair follicles with varying abilities to produce pigment.
July 2022 in “Research Square (Research Square)” Hair analysis can somewhat track past testosterone levels but is influenced by factors like hair washing, growth rate, sex, and hair color.
May 2002 in “British Journal of Dermatology” A pregnant woman's skin condition improved after giving birth, possibly due to high estrogen levels during pregnancy.
January 2019 in “Menoufia Medical Journal” Lower vitamin D levels may contribute to female hair loss.
November 2022 in “The journal of investigative dermatology/Journal of investigative dermatology” The study found markers indicating that cells responsible for hair color are differentiating in specific areas of the hair follicle.
10 citations
,
September 2013 in “Veterinary dermatology” Medroxyprogesterone injections caused hair regrowth in some dogs with alopecia X.
2 citations
,
December 2021 in “Cureus” Low vitamin D levels are linked to hair loss, and vitamin D might help treat it.
21 citations
,
January 2020 in “Conservation Physiology” Hair follicles increase hair cortisol levels, so consistent hair collection methods are important.
5 citations
,
December 2024 in “Journal of Cosmetic Dermatology” Vitamin D and zinc may help treat alopecia areata.
Certain gene variations and different levels of BDNF and CRH hormones are linked to vitiligo.
36 citations
,
October 2021 in “Frontiers in Endocrinology” Insulin resistance and high male hormone levels are major causes of Polycystic Ovary Syndrome.
11 citations
,
January 2014 in “Egyptian Journal of Dermatology and Venereology” Women losing hair might have lower levels of vitamin D.
10 citations
,
August 2023 in “Animals” SLC45A2 and GPNMB genes help control chicken feather color by promoting melanin.
January 2025 in “Clinical Cosmetic and Investigational Dermatology” Pediatric alopecia areata is more immune-active than adult cases, suggesting age-specific treatments and potential use of JAK inhibitors.
February 2025 in “Biomolecules” RORA boosts autophagy in hair follicle stem cells, potentially aiding hair growth.
Collagen, curcumin, and glutathione can improve skin health in aging women with low estrogen.
August 2024 in “Journal of Cosmetic Dermatology” Telogen effluvium is linked to deficiencies in iron, vitamin B12, and thyroid function.
June 2004 in “Journal of Investigative Dermatology” Increased pigmentation may protect skin from UVB, new targets for skin disease treatments were identified, sunscreen ingredients don't affect hormones, TNF-α inhibitors may help diabetic wounds, and certain treatments could prevent chemotherapy-induced hair loss.
103 citations
,
December 2021 in “Journal of biological rhythms” Shift work disrupts the body's natural clock, leading to health problems.
28 citations
,
June 2015 in “Journal of circadian rhythms” An individual's morning or evening preference can predict changes in their body clock gene expression.
450 citations
,
January 2005 in “The journal of investigative dermatology/Journal of investigative dermatology” Hair color is determined by melanin produced and transferred in hair follicles.
11 citations
,
May 1998 in “Acta agriculturæ Scandinavica. Section A, Animal science” Blue foxes born later in the season have a slightly delayed fur growth cycle, but it catches up by mid-November.
March 1994 in “Proceedings of the British Society of Animal Production” Angora goats produce more hair faster than Cashmere goats.
1 citations
,
June 2011 in “InTech eBooks” Darker skin provides more protection against UV damage and cancer.
April 2025 in “Frontiers in Animal Science” Sheep exosomes can enhance hair growth in mice.
July 2023 in “Drug testing and analysis (Print)” Homemade hair treatments can significantly lower drug levels in hair, possibly causing false-negative drug tests.
November 2022 in “Journal of Investigative Dermatology” A new molecule was found to be a safe and effective skin lightener and anti-aging product.
36 citations
,
June 2016 in “Journal of dermatological treatment” The combination therapy significantly improved Riehl’s melanosis in patients without serious side effects.