August 2005 in “The Journal of Cell Biology” Sgk3 kinase is essential for normal hair growth in mice.
December 2004 in “Medicine” Pregnancy can cause skin changes and may affect pre-existing skin conditions, with some treatments not safe for use during pregnancy.
September 2004 in “Experimental Dermatology” Stress increases nerve growth factor, causing hair loss in mice.
April 2000 in “Chinese Journal of Dermatology” Epidermal growth factor (EGF) boosts hair follicle growth and speeds up hair cycle transition.
November 1995 in “Journal of Pediatric Health Care” Most hair loss in kids and teens is due to common conditions, and hair usually grows back within 6 months.
August 2015 in “Dermatologica Sinica” Men with severe hair loss may have poorer sperm quality.
January 2011 in “Journal of biological research” Endocrine disruptors may cause early hair loss.
January 2009 in “CRC Press eBooks” Androgenetic alopecia, or common baldness, is the main cause of hair loss in men due to shrinking hair follicles from hormones, and it's normal but can be a problem if it's too much or too early.
93 citations
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May 1990 in “The EMBO Journal” Mice with extra sheep genes had hair that fell out and regrew in cycles.
40 citations
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July 1989 in “Journal of Cell Science” Rat hair follicles can be kept alive in a lab for 7 days but then stop growing.