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The dissipation of body heat remains the most widely accepted evolutionary explanation for the loss of body hair in early members of the genus Homo, the surviving member of which is modern humans. [7] [8] [9] Less hair, and an increase in sweat glands, made it easier for their bodies to cool when they moved from living in shady forest to open ...
H. Harris, publishing in the British Journal of Dermatology in 1947, wrote Native Americans have the least body hair, Han Chinese people and black people have little body hair, white people have more body hair than black people and Ainu have the most body hair. [18] Anthropologist Arnold Henry Savage Landor described the Ainu as having hairy ...
Many treatments have been explored, including immunomodulatory agents such as imiquimod. [4] Tofacitinib citrate may also have benefits. In June 2014, a 25-year-old man with almost no hair on his body was reported to have grown a full head of hair, as well as eyebrows, eyelashes, and facial, armpit, and other hair, following eight months of treatment. [5]
Abdominal hair is the hair that grows on the abdomen of humans and non-human mammals, in the region between the pubic area and the thorax (chest). The growth of abdominal hair follows the same pattern on nearly all mammals, vertically from the pubic area upwards and from the thorax downwards to the navel .
55806 15460 Ensembl ENSG00000168453 ENSMUSG00000022096 UniProt O43593 Q61645 RefSeq (mRNA) NM_005144 NM_018411 NM_021877 NM_001379479 RefSeq (protein) NP_005135 NP_060881 NP_068677 NP_001366408 Location (UCSC) Chr 8: 22.11 – 22.13 Mb Chr 14: 70.79 – 70.81 Mb PubMed search Wikidata View/Edit Human View/Edit Mouse HR is a gene encoding Protein hairless. This gene encodes a protein whose ...
For example, Morris wrote that the intense human pair bond evolved so that men who were out hunting could trust that their mates back home were not having sex with other men, and suggested the possibility that sparse body hair evolved because the "nakedness" helped intensify pair bonding by increasing tactile pleasure.
Shaving is most commonly practiced by men to remove their facial hair and by women to remove their leg and underarm hair. A man is called clean-shaven if he has had his beard entirely removed. [1] Both men and women sometimes shave their chest hair, abdominal hair, leg hair, underarm hair, pubic hair, or any other body hair. [2]
In alopecia areata, a hair follicle is attacked by the immune system. T-cells swarm the roots, killing the follicle. This causes the hair to fall out and parts of the head to become bald. Alopecia areata is thought to be a systemic autoimmune disorder in which the body attacks its own anagen hair follicles and suppresses or stops hair growth. [22]