18 citations,
November 1998 in “Comparative biochemistry and physiology. Part A, Molecular & integrative physiology” Changes in prolactin and DHEA levels are not required for the start of mink hair growth cycles.
7 citations,
January 2015 in “Genetics and molecular research” The RORα gene is active in different parts of cashmere goat hair follicles and may be influenced by melatonin, especially in December when hair growth changes.
2 citations,
September 2004 in “Fertility and sterility” High androgen levels can cause excessive hair growth and may indicate serious health issues, including heart disease and fertility problems.
February 2024 in “Psychoneuroendocrinology” The COVID-19 pandemic did not significantly change stress levels in preschoolers, but higher-income families' children showed higher stress.
October 2023 in “Journal of Preventive Diagnostic and Treatment Strategies in Medicine” Low ferritin and Vitamin D levels may cause hair loss after COVID-19.
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.
56 citations,
October 2018 in “Journal of The American Academy of Dermatology” Androgens play a complex role in skin conditions like acne and hair loss in women, and normal blood levels don't always show true androgen status.
15 citations,
August 2017 in “Scientific Reports” Young men with early hair loss have slightly worse blood sugar and fat levels, suggesting possible health risks and need for monitoring.
142 citations,
February 1985 in “Fertility and sterility” Spironolactone reduced hair thickness and some testosterone levels in women with excessive hair growth.
17 citations,
November 2013 in “American Journal of Primatology” Different monkey species in a lab showed varying levels of hair loss due to factors like type, sex, age, season, and living conditions.
10 citations,
September 2015 in “Gynecological Endocrinology” Both treatments reduced excessive hair growth in PCOS, but there was no difference in weight, hair score, hormone levels, or insulin resistance.
4 citations,
May 2021 in “Dermatologic Clinics” The conclusion is that hair loss in women is caused by a mix of hormonal, environmental, and genetic factors, and treatments should target these various causes.
Hair can naturally regain color after greying, and this change may be linked to stress levels.
May 2006 in “Women's Health Medicine” Excessive hair growth in women, often from high androgen levels, is usually caused by PCOS, and can be treated with hair removal, medication, and possibly weight loss.
122 citations,
July 2005 in “The FASEB journal” Hair follicles produce and respond to melatonin, affecting hair growth and sensitivity to estrogen.
71 citations,
May 2007 in “The FASEB journal” Human hair follicles produce and respond to erythropoietin, helping protect against stress.
March 2023 in “Bagcılar medical bulletin” A young woman had a rare tumor causing high male hormone levels and symptoms like excessive hair and acne. After removing the tumor, her hormone levels returned to normal. Early diagnosis is important.
124 citations,
January 1995 in “The journal of allergy and clinical immunology/Journal of allergy and clinical immunology/The journal of allergy and clinical immunology” Netherton's syndrome is linked to high IgE levels and unique skin and hair symptoms, and may improve with ammonium lactate lotion and allergy management.
56 citations,
November 2010 in “Pigment Cell & Melanoma Research” Brain hormones significantly affect hair color and could potentially be used to prevent or reverse grey hair.
22 citations,
January 2002 in “Treatments in endocrinology” Birth control pills help treat skin and hair growth problems linked to high male hormone levels.
11 citations,
February 2008 in “British journal of nursing” Idiopathic hirsutism causes excessive hair growth in women, can be treated with medication and hair removal, but cannot be fully reversed.
9 citations,
January 2005 in “Experimental dermatology” Melatonin receptors in hair follicles help regulate hair growth and could treat hair loss.
6 citations,
January 2016 in “Annals of Dermatology” Human hair contains more glycosaminoglycans in children than adults, and these compounds decrease with age, possibly affecting hair thickness.
2 citations,
February 2021 in “Endocrinology, diabetes & metabolism case reports” A teenage girl had both a rare ovarian tumor and a severe form of polycystic ovarian syndrome.
September 2004 in “Experimental dermatology” Melatonin directly affects mouse hair follicles and may influence hair growth.
51 citations,
January 2004 in “Domestic animal endocrinology” Melatonin implants and long daylight hours alter the timing of hormone release and hair growth in mouflon sheep.
18 citations,
April 2013 in “PLOS ONE” Mice with autoimmune hair loss showed signs of heart problems.
2 citations,
January 2013 in “Elsevier eBooks” The chapter explains the causes of excessive hair growth and masculinization in women and how to measure hormone levels related to these conditions.
157 citations,
April 1994 in “Clinical endocrinology” Androgens can cause hair growth in some areas and hair loss on the scalp.
4 citations,
August 2019 in “General and Comparative Endocrinology” Male yak hair growth is influenced by DHT synthesis, which is promoted by 5α-red1 and AR during growth phases, while E2 may inhibit growth through ERα.