14 citations
,
September 2017 in “General and comparative endocrinology” Barn owls with smaller black spots have higher testosterone levels, which might be due to genetic effects on hormone regulation rather than hormone effects on coloration.
December 2023 in “International journal of high dilution research” Melatonin and Lissotriton improved hair quality and increased activity in mice.
112 citations
,
February 2001 in “Journal of Investigative Dermatology” Neuropeptides affect hair growth, with some speeding it up and others slowing it down.
February 2023 in “Biophysical Journal” Light can be used to stimulate ear hair cells, improving speed and consistency over previous methods.
Researchers developed a new model for more realistic computer graphics of hair by considering how light scatters on hair fibers.
260 citations
,
January 2020 in “Nature” Stress can cause hair to turn gray by depleting stem cells.
127 citations
,
June 2008 in “British Journal of Clinical Pharmacology” Low doses of some substances can be beneficial, while high doses can be harmful or toxic.
2 citations
,
January 2000 in “Journal of Toxicologic Pathology” A single recessive gene causes sparse hair in certain Japanese White rabbits.
7 citations
,
August 2009 in “Applied Mathematics and Mechanics-English Edition” Hair fibers have fractal patterns with properties related to the golden mean, which may affect their functionality.
24 citations
,
February 2016 in “Journal of Animal Physiology and Animal Nutrition” Hair sheep in tropical climates need different mineral amounts for growth than commonly recommended.
1 citations
,
March 2012 in “Revue neurologique” Proper diet management is crucial for preventing severe symptoms in phenylketonuria.
1 citations
,
May 2024 in “Tạp chí Nghiên cứu Y học” Eclipta prostrata extract significantly promotes hair growth in rats.
September 2024 in “The Journal of Dermatology” Nevus comedonicus can sometimes grow terminal hair, challenging previous beliefs.
5 citations
,
January 2023 in “Nature cell biology” A specific signal from hair cells controls the tightening of the surrounding muscle, which is necessary for hair shedding.
59 citations
,
April 2016 in “Cell Reports” EdnrB signaling helps melanocyte stem cells regenerate and could be targeted to treat pigmentation issues.
August 2022 in “Authorea (Authorea)” April 2018 in “Journal of Investigative Dermatology” African spiny mice can regenerate skin and hair after wounds due to specific tissue mechanics.
5 citations
,
March 2023 in “bioRxiv (Cold Spring Harbor Laboratory)” Dynamic, light touch is sensed through a common mechanism involving Piezo2 channels in sensory axons.
Depressed individuals have higher hair sodium and potassium levels, similar to changes seen in astronauts.
4 citations
,
August 2023 in “Nature Communications” Mouse zigzag hair bends form due to a 3-day cycle of changes in hair progenitors and their environment.
5 citations
,
May 2011 in “Movement Disorders” Finasteride significantly reduced tics and obsessive-compulsive symptoms in Tourette syndrome patients.
4 citations
,
February 2008 in “Cell stem cell” NFATc1 is crucial for keeping hair follicle stem cells inactive.
161 citations
,
July 2003 in “ACM Transactions on Graphics” Researchers developed a new model for more realistic computer graphics rendering of hair by considering how light scatters on hair fibers.
33 citations
,
January 2014 in “Pediatric Research” October 2022 in “Hair Transplantation” Hair disorders are caused by genetics, environment, hormones, or inflammation, and treatments focus on normalizing hair growth and density.
April 2024 in “American Journal of Biological Anthropology” Hair traits vary widely and are not reliable indicators of ancestry.
July 2021 in “European Journal of Plastic Surgery” Modern society values both traditional beauty and imperfections, but media pressures lead to more cosmetic enhancements and ethical concerns.
6 citations
,
October 2018 in “PLoS ONE” Stress can slow hair growth and affect skin color by impacting the body's stress response system.
41 citations
,
December 2008 in “Pediatric Dermatology” Trichoscopy can diagnose Netherton syndrome without pulling hairs.