March 2022 in “Brazilian Journal of Health Review” COVID-19 can cause a type of hair loss that usually starts 3-6 months after the illness, and treatment includes stress reduction and hair care products like Minoxidil.
February 2022 in “Journal of Cosmetic Dermatology” Argan oil protects hair from oxidative damage and reduces protein loss.
18 citations,
May 2014 in “Menopause” A 5 mg dose of transdermal testosterone cream effectively restores testosterone levels in postmenopausal women.
8 citations,
March 2020 in “Frontiers in Cell and Developmental Biology” Researchers created immortal human skin cells with constant testosterone receptor activity to study hair loss and test treatments.
8 citations,
June 2016 in “Journal of Pediatric Orthopaedics B” Washing baby socks without flipping them inside out may increase the risk of Hair Tourniquet Syndrome.
4 citations,
January 2015 in “Endocrinology & metabolic syndrome” Testosterone can cause acne and male-pattern baldness, affects hair growth in men and women, and makes male skin more sensitive.
2 citations,
January 2018 in “Biology and medicine” High testosterone levels in 20% of the women studied may indicate PCOS, while 80% had low levels with potential health impacts.
27 citations,
February 2017 in “Biomedicine & Pharmacotherapy” White wax and policosanol from white wax effectively reduced hair loss and promoted hair growth in mice better than a known hair growth drug.
24 citations,
June 2011 in “Andrologia” Ganoderma lucidum may help treat enlarged prostate in rats.
21 citations,
November 2010 in “Talanta” Researchers developed a reliable method to measure testosterone and epitestosterone in urine for medical and anti-doping use.
15 citations,
July 2019 in “Journal of Biological Inorganic Chemistry” Finasteride helps prevent kidney stones, but side effects need more research.
12 citations,
December 2017 in “Scientific reports” The new test can measure very small amounts of testosterone in hair, and grinding the hair up first gives more accurate results.
8 citations,
November 2015 in “Saudi Journal of Biological Sciences” A mix of Panax ginseng and bee-pollen may help prevent prostate enlargement in rats.
4 citations,
September 2020 in “Andrologia” Oregano extract helps fix testis and sperm damage caused by finasteride.
1 citations,
October 2023 in “PloS one” Cosmetic hair treatments can increase hair testosterone levels, while natural hair color does not affect it.
1 citations,
January 2008 in “Proceedings of the 9th World Rabbit Congress, Verona, Italy, 10-13 June 2008” Furless male rabbits grew slightly faster and heavier than furred ones, but testosterone levels were not the cause.
April 2019 in “Journal of Investigative Dermatology” Testosterone affects androgen receptors and lipid storage in cells, while DHEA does not convert to testosterone or affect these receptors in the same way.
2 citations,
March 2015 in “Toxicology and Environmental Health Sciences” Rice bran extract caused moderate skin irritation but no eye irritation, while a diluted essence was not irritating to skin and only slightly to guinea pigs.
2 citations,
March 2019 in “Journal of Histochemistry and Cytochemistry” Neuronatin is found in specific cells within rat testis, hair follicles, tongue, and pancreas, suggesting it has various roles in tissue development and function.
63 citations,
August 1996 in “Forensic Science International” Cosmetic treatments like bleaching and perming can greatly reduce opiate levels in hair, possibly leading to false-negative drug tests.
December 2023 in “Data in Brief” Curly hair's strength and flexibility vary with moisture and temperature.
10 citations,
May 2010 in “Analytica Chimica Acta” New tests detect finasteride and dutasteride in urine quickly and easily.
5 citations,
January 2015 in “Current problems in dermatology” The document concludes that a thorough history, physical exam, and specific tests are crucial for diagnosing and managing hair loss effectively.
4 citations,
January 2021 in “Skin appendage disorders” Washing hair daily is better and preferred, with no negative effects.
2 citations,
January 2022 in “Clinical, Cosmetic and Investigational Dermatology” The refined wash test is a reliable way to measure daily hair loss and can tell the difference between different types of hair loss.
1 citations,
October 2013 in “Expert Review of Dermatology” Diagnosing alopecia areata is challenging and requires careful examination and various tests to distinguish it from other hair loss types.
Hair and nails can show hormone changes during puberty in dogs.
December 2013 in “Macedonian Journal of Medical Sciences” Ovarian steroid cell tumors should be considered in adults with hirsutism and high testosterone, with surgery as the main treatment.
51 citations,
November 1998 in “The journal of investigative dermatology/Journal of investigative dermatology” Beard cells, unlike scalp cells, produce growth factors in response to testosterone, which may explain differences in hair growth.
19 citations,
March 1998 in “Endocrinology” Male rats have more somatostatin neurons than females due to testosterone converting to estrogen during early development.