Stress significantly contributes to hair loss, especially in women and those aged 31-40.
December 2014 in “Bali Medical Journal” Females have higher estrogen receptor levels in hair than males, and these levels decrease in white hair compared to black hair.
Hair follicles can be used to quickly assess drug effects in cancer treatment.
January 1997 in “Elsevier eBooks” Hair and nails are skin parts that develop early and serve protective and functional roles.
417 citations,
September 2005 in “PLoS biology” Understanding gene expression in hair follicles can reveal insights into hair growth and disorders.
131 citations,
November 1998 in “The journal of investigative dermatology/Journal of investigative dermatology” Skin grafts on mice can cause an immune response leading to hair loss, useful for studying human hair loss conditions.
117 citations,
March 2017 in “Nature Communications” Macrophages help regrow hair by activating stem cells using AKT/β-catenin and TNF.
111 citations,
March 1951 in “Annals of the New York Academy of Sciences” Understanding the mouse hair cycle is crucial for cancer research.
93 citations,
February 2008 in “Atmospheric environment” Ozone reacts more with unwashed hair, producing compounds due to scalp oils, which could lower ozone exposure but increase exposure to reaction products.
48 citations,
December 2004 in “Differentiation” Tooth papilla cells can help regenerate hair follicles and grow hair.