Some factors can either promote or inhibit hair growth.
September 1976 in “PubMed” Hirsutism is excessive male-pattern hair growth mainly caused by ovarian hormones, and severe cases may require costly treatment with side effects.
January 2023 in “Iranian Journal of Pharmaceutical Research” Stauntonia hexaphylla extract can help treat hair loss by blocking certain hormones.
3 citations
,
February 1992 in “Journal of veterinary medicine. Series A” The farm-raised blue fox had a delayed winter coat cycle and abnormal hormone levels, but its hair growth and hormone changes were still linked.
49 citations
,
April 1997 in “Human reproduction” Hormone therapy for excessive hair growth is as good with GnRHa as with high-dose CPA, but GnRHa has longer-lasting results.
30 citations
,
August 1984 in “Journal of the American Academy of Dermatology” Low-sulfur hair syndrome can cause UVB sensitivity and testicular failure.
February 1999 in “Strength and Conditioning Journal” Androstenedione, a hormone supplement, doesn't improve muscle or performance and can cause harmful side effects.
1540 citations
,
October 2008 in “Fertility and Sterility” The report concludes that PCOS is mainly a condition of excess male hormones and its definition may change as new information is discovered.
102 citations
,
July 2020 in “International journal of molecular sciences” Hormones like testosterone and estrogen significantly affect hair growth and structure.
53 citations
,
January 2006 in “The Journal of clinical endocrinology and metabolism/Journal of clinical endocrinology & metabolism” Reduced AR gene methylation may cause early pubic hair growth in girls.
1 citations
,
September 2017 in “Journal of Investigative Dermatology” Blocking a specific enzyme can reduce the negative impact of stress hormones on hair growth cells.
July 2024 in “Journal of the ASEAN Federation of Endocrine Societies” In post-menopausal women, signs of increased male hormones should be checked for possible ovarian cancer.
January 2022 in “World journal of pharmaceutical sciences” Many women with polycystic ovarian disease show symptoms like excessive hair growth, acne, hair loss, and have high levels of certain hormones.
March 1998 in “Journal of dermatological science” Protease Nexin-1 is found in human hair growth cells and is affected by male hormones.
January 2010 in “The Internet Journal of Family Practice” Hypothyroidism slows metabolism, causing growth and mental issues in children and reversible symptoms in adults, needing early treatment.
42 citations
,
July 2012 in “PLOS ONE” Estrogen can temporarily slow down hair growth but this can be reversed.
23 citations
,
November 2007 in “Actas Dermo-Sifiliográficas” Thyroid hormone (T3) may reverse gray hair by stimulating hair growth.
December 1999 in “Evidence-based obstetrics and gynecology/Evidence-based obstetrics & gynecology” Flutamide worked better than finasteride for reducing excessive hair growth in women, but had more side effects.
March 2023 in “Journal of Cosmetic Dermatology” Low-dose oral minoxidil improved hair growth when topical treatments failed.
54 citations
,
February 1993 in “Endocrine reviews” Androgen conjugates might be better indicators of skin sensitivity to hormones in women with excessive hair growth.
1744 citations
,
August 2006 in “The Journal of Clinical Endocrinology and Metabolism” Polycystic Ovary Syndrome should be seen mainly as a condition of excess male hormones, with a focus on this in its definition.
43 citations
,
May 1988 in “British Journal of Dermatology” Patients with acanthosis nigricans often have insulin resistance and signs of increased male hormones, but treatment targeting these male hormones is generally ineffective.
27 citations
,
September 1999 in “Journal of Investigative Dermatology” Human skin cells contain Protease Nexin-1, and male hormones can decrease its levels, potentially affecting hair growth.
26 citations
,
November 2011 in “Arquivos Brasileiros De Endocrinologia E Metabologia” Diagnosing PCOS in teenagers should focus on signs of excess male hormones and not rely solely on ovarian ultrasound or irregular periods, and should be reassessed in adulthood.
21 citations
,
January 2020 in “General and Comparative Endocrinology” Lack or blocking of SRD5a, a key component in hormone creation, can lead to conditions like pseudohermaphrodism and affect hair growth, bone mass, muscle strength, and reproductive health. More research is needed on its regulation from fertilization to adulthood.
3 citations
,
May 2014 in “InTech eBooks” Copper deficiency may cause hair loss, and treating it could involve nutrition and hormones.
2 citations
,
January 1975 in “Archives of Dermatological Research” Certain enzymes react strongly with some hormones in rat skin during hair growth, mainly in sebaceous glands and hair sheaths.
December 2023 in “Scientific Reports” Scientists created cell lines from balding patients and found that cells from the front of the scalp are more affected by hormones that cause hair loss than those from the back.
November 2022 in “Journal of the Endocrine Society” A woman's masculine features were caused by a rare ovarian tumor that produced male hormones.
October 2022 in “Linköping University medical dissertations” The method shows hair testosterone levels reflect those in saliva, but are affected by various factors and may indicate a risk for heart attack.