Different types of sun exposure damage skin cells and immune cells, with chronic exposure leading to more severe and lasting damage.
May 2025 in “Journal of Inflammation Research” Natural killer and CD8+ T cells play a key role in hair loss in androgenetic alopecia.
127 citations,
January 2000 in “Journal of Investigative Dermatology” Cytotoxic T cells cause hair loss in chronic alopecia areata.
16 citations,
April 2007 in “Journal of Medical Primatology” The monkey's hair loss was due to an autoimmune disease, not genetics.
January 2015 in “Journal of clinical & experimental dermatology research” A protein combining parathyroid hormone and collagen helped hair regrow in mice with a hair loss condition.