32 citations,
December 1969 in “The Lancet” Children with marasmus have more resting hair follicles and thinner, less pigmented hair, showing long-term malnutrition.
20 citations,
August 2007 in “Molecular therapy” Applying a DNA vaccine to skin with active hair growth boosts immune response and protection against anthrax in mice.
15 citations,
September 2012 in “PTR. Phytotherapy research/Phytotherapy research” Ginsenosides Rb₁ and Rd may help prevent hair loss by promoting hair cell growth.
12 citations,
June 2006 in “Anais Brasileiros de Dermatologia” The study found average numbers for different types of hair follicles in the scalp and observed differences between men and women, suggesting reasons for more common hair shedding in women.
3 citations,
June 2013 in “Genes & development” CaV1.2 helps activate hair follicle stem cells without calcium flux.
3 citations,
October 2003 in “Annals of Oncology” A woman with low thyroid function did not lose her hair during chemotherapy, possibly because her hair follicles were less affected by the treatment.
February 2023 in “International journal of molecular sciences” Infrared spectral imaging can effectively study protein distribution in hair follicles during hair growth.
COVID-19 may be linked to hair loss called Telogen Effluvium, affecting quality of life and self-esteem.
86 citations,
August 2000 in “Pigment cell research” Melanocyte activity in hair follicles is linked to the hair growth cycle, being active in growth phases and inactive in rest phases.
8 citations,
September 2002 in “Genes to Cells” Killing specific cells in hair follicles can lead to hair growth problems in mice.
38 citations,
October 1988 in “Clinics in Dermatology” Minoxidil can help grow hair and make hair follicles bigger, but it can also cause side effects.
January 2022 in “Stem cell biology and regenerative medicine” Improving dermal papilla cells can help regenerate hair follicles.
159 citations,
July 2006 in “Endocrine Reviews” Estrogens significantly influence hair growth by interacting with receptors in hair follicles and may help regulate the hair growth cycle.
April 2018 in “Journal of Investigative Dermatology” Glycogen metabolism is important for energy and processes in human hair follicles, and hair follicles may produce glucose from lactate.
130 citations,
January 1994 in “Differentiation” Mouse hair follicle cells briefly grow during the early hair growth phase, showing that these cells are important for starting the hair cycle.
50 citations,
May 2004 in “Journal der Deutschen Dermatologischen Gesellschaft” Estrogens generally inhibit hair growth and improve skin quality, but their exact effects on hair follicles are complex and not fully understood.
January 2019 in “SAGE Open Medical Case Reports” A scalp biopsy revealed systemic amyloidosis in a woman who initially seemed to have a common hair loss condition.
45 citations,
January 2012 in “Experimental Dermatology” Human hair follicles switch between active and resting phases unpredictably.
88 citations,
June 2019 in “Cell reports” Certain small molecules can promote hair growth by activating a cellular cleanup process called autophagy.
81 citations,
July 2011 in “Lasers in Medical Science” The Lexington LaserComb helped regrow hair in mice with a condition similar to human hair loss.
25 citations,
August 2017 in “Animal Biotechnology” Researchers found that certain RNA molecules might play a role in the growth of Cashmere goat hair.
October 2024 in “Frontiers in Veterinary Science” FKBP10 and FBN2 are key proteins for hair growth in cashmere goats.
July 2004 in “Dermatologic Surgery” A woman had temporary hair loss due to a stress-related condition after a facelift.
277 citations,
July 2011 in “Journal of the Dermatology Nurses’ Association” The skin's layers protect, sense, and regulate the body's internal balance, but can be prone to cancer.
72 citations,
July 2012 in “Journal of Investigative Dermatology” Mice lacking a key DNA methylation enzyme in skin cells have a lower chance of activating stem cells necessary for hair growth, leading to progressive hair loss.
57 citations,
November 1987 in “Pediatric Dermatology” Children's hair grows in different types from before birth through puberty, with growth rates and characteristics varying by age, sex, and race.
41 citations,
July 2015 in “Clinical and Experimental Dermatology” Psoriasis can cause temporary or permanent hair loss.
38 citations,
October 1988 in “Clinics in Dermatology” Hormones, nutrition, and seasonal changes regulate hair growth cycles, with androgens extending growth phases and factors like aging and malnutrition affecting hair loss and thinning.
31 citations,
August 2005 in “The American Journal of Dermatopathology” The study concluded that PKP1 is essential for skin integrity and hair growth, and its dysfunction causes the symptoms of ectodermal dysplasia/skin fragility syndrome.
20 citations,
February 2018 in “Cell transplantation” Cinnamomum osmophloeum leaf extract may help treat hair loss by promoting hair growth and increasing hair cell proliferation.