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.
1 citations,
August 2006 in “International forensic science and investigation series” Hair testing is a reliable method for detecting workplace drug use when done with proper sample preparation and confirmation.
143 citations,
August 1991 in “Endocrinology” Androgens, like testosterone, are crucial for early testicular descent in rats.
59 citations,
September 1994 in “The Journal of Clinical Endocrinology and Metabolism” Finasteride reduces scalp DHT levels, potentially treating male pattern baldness.
36 citations,
December 2016 in “Journal of The American Academy of Dermatology” The normal range for the hair pull test is 2 hairs or fewer, and washing or brushing hair before the test does not affect the results.
4 citations,
May 2021 in “Molecules” The hair test for vitamin D could be a useful alternative to blood tests, providing a longer-term vitamin D status, but more research is needed.
4 citations,
January 2021 in “Skin appendage disorders” Washing hair daily is better and preferred, with no negative effects.
4 citations,
September 2020 in “Andrologia” Oregano extract helps fix testis and sperm damage caused by finasteride.
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.
August 2019 in “Journal of archaeological science: Reports/Journal of archaeological science: reports” Ancient hair can preserve hormones, revealing health and fertility insights.
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.
244 citations,
September 2008 in “Annual Review of Genomics and Human Genetics” The document concludes that the fast-growing direct-to-consumer genetic testing market lacks sufficient regulation, posing risks to consumers due to questionable test quality and accuracy.
May 2017 in “Journal of The American Academy of Dermatology” The new baby shampoo and wash with stearic acid is safe and potentially effective for nourishing babies' skin.
20 citations,
April 2021 in “Journal of Womens Health” Testosterone can help premenopausal and postmenopausal women with low sexual desire, but its long-term safety is unclear and it's not widely approved for this use.
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.
3 citations,
November 2021 in “Stress” Girls had higher stress hormone levels during school due to social and emotional issues, while boys had higher overall hormone levels with slight changes when school started.
1 citations,
November 2011 in “Archives of Dermatology” A woman's hair loss was caused by her husband's testosterone gel and a diabetic man's nail disease led to bone infection, both treated successfully.
The case shows the difficulty in diagnosing certain conditions when standard tests are negative.
February 2010 in “Journal of The American Academy of Dermatology” Social or cultural norms, not hair type, more likely influence how often people wash their hair.
19 citations,
March 1998 in “Endocrinology” Male rats have more somatostatin neurons than females due to testosterone converting to estrogen during early development.
3 citations,
October 2022 in “International Journal of Impotence Research” Testosterone Replacement Therapy can improve sexual health in postmenopausal women with low sexual desire, but more research is needed on its long-term effects.
1 citations,
September 2017 in “Journal of Pathology of Nepal” Testing hair roots with a special dye is a simple, non-invasive way to check disease progress in pemphigus vulgaris patients.
September 2024 in “International Journal of Molecular Sciences” High doses of testosterone disrupt hormone levels and receptor expression in the uterus, affecting fertility.
44 citations,
November 2018 in “Journal of applied ecology” Hair analysis for stress and reproductive hormones in wildlife needs more research for accuracy across species.
5 citations,
January 2018 The conclusion is that a new test was created to find substances that affect specific ion channels, and it works well for drug discovery.
1 citations,
April 2024 in “Journal of Pharmaceutical and Pharmacological Sciences” The mouse models are effective for testing new hair loss treatments.
January 2023 in “Advances in pharmacology and clinical trials” Human hair is a significant sample for various tests in clinical, nutritional, archaeological, and forensic studies.
April 2024 in “Pharmacognosy research” The herbal hair dye with natural ingredients like henna was successfully made and tested, but more research is needed on its effectiveness on different hair colors and benefits.
58 citations,
March 2013 in “Human Reproduction Update” Products should be called 'sperm-safe' only after thorough, well-designed tests.
26 citations,
June 2018 in “The journal of immunology/The Journal of immunology” AIRE-deficient rats developed severe autoimmune disease similar to APECED, useful for testing treatments.