98 citations,
October 2012 in “Dermatologic Clinics” Eating the right nutrients can improve hair health, but taking extra supplements usually doesn't help unless you have a deficiency.
82 citations,
April 1981 in “Clinical endocrinology” A girl with rickets and hair loss was found to have a rare condition where her body didn't respond to vitamin D treatment.
78 citations,
June 2013 in “Science” Mice without the Sept4/ARTS gene heal wounds better due to more stem cells that don't die easily.
72 citations,
November 2017 in “Journal of developmental biology” The Hedgehog signaling pathway is important for skin and hair growth and can lead to cancer if it doesn't work right.
64 citations,
May 2003 in “Journal of health psychology” Women with excess body hair feel psychological distress influenced by societal beauty standards, but distress isn't directly linked to the amount of hair.
62 citations,
March 2011 in “European journal of endocrinology” Some parents have a mild form of congenital adrenal hyperplasia without symptoms, and they usually don't need treatment.
61 citations,
September 2008 in “Biological & Pharmaceutical Bulletin” Finasteride almost fully depletes allopregnanolone in rat brains and enhances 20α-DHP, but doesn't change 3α-DHP levels.
60 citations,
September 2004 in “Pediatric Dermatology” A girl developed vitiligo and psoriasis after hepatitis B treatment, and stopping the treatment didn't help.
39 citations,
April 2016 in “Case Reports in Dermatology” Tofacitinib temporarily regrew hair in a man with alopecia, but its effects didn't last.
37 citations,
October 2021 in “Nutrients” Vitamin D might help regulate insulin in the body, but taking Vitamin D supplements doesn't clearly prevent or improve type 2 diabetes. More research is needed.
36 citations,
June 1990 in “Archives of Dermatology” Using minoxidil and anthralin together can improve hair regrowth in severe alopecia areata patients who didn't respond to individual treatments.
34 citations,
May 2013 in “Journal of the European Academy of Dermatology and Venereology” Hair growth slows and shedding increases after childbirth, but most women don't experience excessive hair loss.
33 citations,
October 2004 in “Archives of Dermatological Research” Large prostate links to more hair loss, but age of onset doesn't affect it.
32 citations,
April 2017 in “Scientific Reports” Platelet-rich plasma can help grow more mouse hair follicles, but it doesn't work for human hair follicles yet.
32 citations,
August 2015 in “Journal of Investigative Dermatology” Prominin-1 expressing cells in the dermal papilla help regulate hair follicle size and communication but don't aid in skin repair.
31 citations,
September 2003 in “International Journal of Dermatology” Vitamin D-dependent rickets Type II causes bone problems and hair loss, and doesn't improve with Vitamin D treatment.
31 citations,
April 1999 in “Dermatologic Clinics” Nd:YAG laser can reduce hair with multiple treatments, but permanent removal isn't guaranteed.
31 citations,
January 1989 in “Clinical and Experimental Dermatology” The study tested a hair treatment and found it can help grow hair, but won't stop baldness. It's safe and works well, but needs more testing.
31 citations,
October 1971 in “Steroids” Human beard hair follicles change testosterone into other related hormones, but don't much change androstenedione into testosterone.
27 citations,
May 2015 in “Neuropharmacology” Dutasteride protects dopamine neurons in Parkinson's mice, but Finasteride doesn't.
25 citations,
April 2019 in “Journal of The American Academy of Dermatology” Using 2% tofacitinib cream with narrowband ultraviolet B improved facial vitiligo by 70% in patients who didn't respond to previous treatments, with no side effects reported.
20 citations,
May 2013 in “International Journal of Molecular Medicine” Researchers found a new gene variant linked to a rare bone disease, which doesn't always cause symptoms in carriers.
20 citations,
July 2006 in “Veterinary dermatology” Melatonin helped some Pomeranian dogs regrow hair, but it wasn't linked to estrogen receptors.
19 citations,
January 2018 Most people with alopecia areata have nail changes, which are common but don't greatly affect their quality of life.
18 citations,
October 2018 in “Journal of The American Academy of Dermatology” Some skin medications can harm male fertility, but they don't seem to cause birth defects from father's exposure.
18 citations,
June 2008 in “Archives of Dermatology” Men typically shed about 10 hairs in 60 seconds, and this amount doesn't increase with age.
15 citations,
August 2019 in “Dermatologic Therapy” Platelet-rich plasma (PRP) may help treat hair loss in patients with frontal fibrosing alopecia who don't respond to other treatments.
13 citations,
May 2004 in “Dermatologic Surgery” The paper concludes that copying the natural direction and angle of hair in transplants is key for a natural look and doesn't harm hair survival.
12 citations,
January 2013 in “Alcohol and Alcoholism” Alcohol in teen years leads to more adult drinking, finasteride doesn't help.
10 citations,
January 2019 in “Journal of Chromatography B” Researchers developed a reliable way to measure hormones in urine, showing that a baldness treatment doesn't change hormone levels.