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.
36 citations,
September 2011 in “British Journal of Dermatology” White hair grows thicker and faster than black hair due to higher activity of growth-related genes and proteins.
34 citations,
October 2011 in “Journal of the American Academy of Dermatology” Sarcoidosis is more common and severe in Black patients than in Caucasians, requiring early diagnosis and treatment.
22 citations,
June 1977 in “Postgraduate Medicine” Certain skin conditions are more common in black people due to hair and skin differences.
21 citations,
November 2011 in “Veterinary Pathology” Mouse skin color ranges from pink to black, depending on their hair growth cycle.
2 citations,
May 2018 in “Australasian Journal of Dermatology” Some patients' hair grew back black and white after chemotherapy.
1 citations,
December 1997 in “Archives of dermatology” A 34-year-old woman had itchy black bumps on her face due to a condition called trichostasis spinulosa.
June 2023 in “Hanguk ingeurie hakoeji” Eating fermented protein made from black bean powder twice a day for 60 days improved hair density but not scalp condition or hair thickness.
June 2023 in “Animal Bioscience” Vimentin and transthyretin proteins are linked to black coat color in sheep.
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.
January 2007 in “Inpharma Weekly” Dutasteride is more effective for male pattern baldness than finasteride, and black cohosh extract BNO 1055 is as effective as conjugated estrogens in treating postmenopausal symptoms, with added benefits in reducing sweating and mental symptoms.
25 citations,
January 2013 in “Colloids and surfaces. B, Biointerfaces” Hair dye colors mainly target melanin granules in black hair.
12 citations,
November 1945 in “Archives of dermatology” Transplanted skin on hooded rats often grows white hair instead of black.
9 citations,
November 2015 in “JAMA dermatology” A 91-year-old woman's hair turned black in one spot, with skin changes underneath.
1 citations,
November 2022 in “International journal of trichology” A woman's premature gray hair turned mostly black again after using Greyverse solution and hair supplements for 5 months.
78 citations,
June 1989 in “The Journal of dermatologic surgery and oncology” Acne keloidalis is a chronic skin condition on the back of the neck in young black men, needing surgery for severe cases.
8 citations,
January 2018 in “European journal of dermatology/EJD. European journal of dermatology” The girl's regrown brown hair had less of certain pigments than her original black hair.
May 2024 in “Journal of Fungi” Tinea capitis in adults, especially postmenopausal Black women, needs prompt treatment with oral antifungals to avoid scarring.
August 2023 in “JAAD international” Most patients with Central Centrifugal Cicatricial Alopecia at the reviewed institution were middle-aged Black women, often with no symptoms, and commonly treated with topical medications.
153 citations,
April 2009 in “Urology” Prostate cancer was a major health issue in 2009, especially for Black men, and targeting the 5alpha-reductase enzyme could help in its prevention and treatment.
20 citations,
June 2012 in “Human Reproduction” Women with polycystic ovarian syndrome are more likely to have cervical insufficiency, especially South Asian and Black women.
13 citations,
June 2021 in “Carcinogenesis” Certain hair straighteners and dyes may increase ovarian cancer risk, especially in African American/Black women.
May 2024 in “Indian journal of animal sciences/Indian Journal of Animal Sciences” The Janwal Pashmi dog is a medium-sized, mostly black breed with specific body measurements, and adult males are generally larger than females.
April 2024 in “Indian dermatology online journal” A rare hair follicle disorder can cause itchy, bluish-black bumps on the body.
July 2023 in “Nasza Dermatologia Online” More research is needed on CCCA in children, especially Black and Asian adolescents.
May 2007 in “Dermatologic Therapy” Hair care practices like using relaxers and tight braiding can lead to permanent hair loss in black women.
63 citations,
February 2017 in “ACS biomaterials science & engineering” Polydopamine is a safe, effective, and permanent hair dye that turns gray hair black in one hour.
46 citations,
December 2006 in “Anais Brasileiros de Dermatologia” Acne is the most common skin problem in Brazil, with a need for improved dermatological care and health education, especially for the public sector and black-skinned individuals.
28 citations,
January 2007 in “Journal of dermatology” Three white adults had a rare scalp condition with increased fat and sometimes hair loss, suggesting it's not limited to black women and might be more widespread.
5 citations,
April 2018 in “Chem” Graphene-based hair dye is a safe, durable, and effective alternative to traditional black hair dyes.