7 citations,
March 2021 in “Journal of animal science/Journal of animal science ... and ASAS reference compendium” Blocking prolactin increases the activity of secondary hair follicles in cashmere goats.
5 citations,
May 2017 in “Journal of the European Academy of Dermatology and Venereology” The study found no significant difference in stress hormone levels between people with alopecia areata and healthy individuals, suggesting that the disease is not caused by an overactive stress response system.
3 citations,
August 2022 in “International Journal of Molecular Sciences” COVID-19 can cause hair loss, and treatments like PRP and stem cells might help.
July 2021 in “Journal of dermatology research and therapy” COVID-19 may worsen hair loss, and Nourkrin® could be a safe treatment option, but more research is needed.
March 2023 in “International Journal of Applied Pharmaceutics” The β-sitosterol hair gel is effective and promising for treating hair loss.
3 citations,
October 2021 in “Clinica Chimica Acta” Hormone levels in hair vary across the head, with the highest concentration of a key hormone linked to hair loss at the top.
1 citations,
December 2018 in “Veterinary dermatology” The hair coat disorder in Schipperkes is similar to Alopecia X and involves increased androstenedione levels and hair cycle arrest.
10 citations,
November 2019 in “Neuroendocrinology” Measuring 17-hydroxyprogesterone in hair can help monitor androgen levels in people with congenital adrenal hyperplasia.
34 citations,
March 2003 in “Veterinary Dermatology” Most dogs with alopecia had higher than normal levels of certain hormones, but hair loss might not always be linked to these hormone changes.
11 citations,
February 2005 in “Clinical pharmacology and therapeutics/Clinical pharmacology & therapeutics” Hair cortisol could be a marker for chronic stress in pregnancy, but depression affects cortisol levels differently.
3 citations,
June 2021 in “Journal of affective disorders” Hair cortisol and cortisone levels may affect how work stress influences depression in Chinese fishermen.
2 citations,
June 2022 in “Scientific reports” Women with PCOS have higher hair cortisol levels, which are linked to worse metabolic and inflammatory conditions.
52 citations,
October 2004 in “Veterinary dermatology” Melatonin and mitotane treatment led to hair re-growth in 62% of dogs with Alopecia X, but this was not always linked to normal hormone levels.
11 citations,
September 2020 in “Steroids” A new method accurately measures steroid hormones in a few hair strands and could help study chronic stress and hair loss.
1 citations,
December 2018 in “IntechOpen eBooks” Human hair shows promise for non-invasive medical testing, but more research is needed to standardize its use.
38 citations,
August 2012 in “Biochemical and biophysical research communications” Human leukocytes and beard hair follicle cells have internal daily clocks, and PER1 and PER3 genes may indicate individual circadian rhythms.
6 citations,
September 2010 in “Animal” Selecting Angus cattle for earlier puberty lowers prolactin levels but doesn't affect hair growth.
January 2018 in “Springer eBooks” Gender affects hair and scalp characteristics, with differences in hormone responses, graying patterns, and trace metals.
December 2011 in “Korean journal of veterinary research” A Miniature Pinscher dog with hair loss and scaling was diagnosed with pattern alopecia and improved with melatonin treatment.
February 2024 in “Biomedicines” Hormones like androgens, estrogen, thyroid hormones, and stress hormones can contribute to hair loss, and treatments target these hormonal imbalances.
183 citations,
March 1982 in “JAMA” Spironolactone is a safe and effective treatment for reducing excessive hair growth in women.
2 citations,
May 2021 in “Scientific Reports” Stress is likely causing hair loss in Formosan macaques.
March 2022 in “Journal of drug delivery and therapeutics” Sea hibiscus leaf extract at 30% concentration in a hair tonic significantly increased hair growth in guinea pigs.
January 2014 in “S. Karger AG eBooks” Type 2 diabetes in youth is increasing, with high treatment failure rates and more severe than Type 1; certain drugs can lower lipid levels effectively with varying side effects, and apples may benefit heart health like statins but with fewer side effects.
2 citations,
December 2021 in “BMC veterinary research” Long-term use of difluprednate eye drops in dogs can lead to hair loss and hormone imbalance.
116 citations,
April 2002 in “American journal of veterinary research” Trilostane effectively and safely treats dogs with pituitary-dependent hyperadrenocorticism, improving symptoms and adrenal gland size.
1 citations,
August 2020 in “British Journal of Dermatology” Caffeine may protect hair follicles from stress-related hair loss.
20 citations,
July 2006 in “Veterinary dermatology” Melatonin helped some Pomeranian dogs regrow hair, but it wasn't linked to estrogen receptors.
October 2023 in “Scientific reports” Dexamethasone affects hair growth by altering levels of proteins that either promote or inhibit hair follicle growth.
166 citations,
August 2010 in “Proceedings of the National Academy of Sciences of the United States of America” Scientists found a new, less invasive way to study body clocks using hair cells, which shows shift workers' body clocks don't match their lifestyles.