Different hair growth phases affect how follicles respond to X-rays, and hormones like testosterone and dihydrotestosterone play a key role in baldness; transplanted hair can grow on bald scalp areas.
10 citations
,
November 2018 in “Developmental Psychobiology” Hair can effectively measure DHEA and testosterone levels in children.
4 citations
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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.
February 1990 in “PubMed” Higher DHEA-S levels in hirsute females affect hair growth phases.
92 citations
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November 2003 in “The Journals of Gerontology” Testosterone supplements can increase muscle mass and strength in older men with low levels, but long-term effects and risks need more research.
23 citations
,
September 2021 in “Frontiers in Cellular and Infection Microbiology” Testosterone's effects on COVID-19 are unclear and need more research.
10 citations
,
November 2019 in “Neuroendocrinology” Measuring 17-hydroxyprogesterone in hair can help monitor androgen levels in people with congenital adrenal hyperplasia.
1 citations
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January 1971 Hormones, especially androgens, affect hair growth and can cause hair loss or excess hair in both men and women.
46 citations
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May 2012 in “Molecular and Cellular Endocrinology” Human skin produces sex hormones like estrogen and testosterone, influenced by ARO and StAR, which may affect skin elasticity and hair growth.
50 citations
,
March 2001 in “Clinics in Dermatology” Genes and hormones cause hair loss, with four genes contributing equally.
43 citations
,
July 1984 in “Clinical and Experimental Dermatology” Antiandrogen therapy helped increase hair growth in women with hormonal imbalances related to baldness.
22 citations
,
April 1972 in “Journal of Steroid Biochemistry” Beard hair follicles convert testosterone to 5α-dihydrotestosterone most intensively.
May 2023 in “Vestnik dermatologii i venerologii” Early-stage male pattern baldness shows two types of hair loss: one on the top of the head linked to hormonal changes, and another at the back of the head. The top hair loss responds well to specific treatment, while the back hair loss does not.
48 citations
,
April 1995 in “PubMed” Testosterone helps beard and axillary hair cells grow by releasing growth factors from dermal papilla cells.
41 citations
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July 2001 in “PubMed” Estrogens can reduce DHT production in hair follicles, but are less effective than finasteride and progesterone.
18 citations
,
January 1994 in “Skin Pharmacology and Physiology” Androgens shorten hair growth phases, causing finer hair and more severe hair loss in men.
8 citations
,
November 2020 in “Journal of Cosmetic Dermatology” The ingredients may help prevent hair loss and aging by boosting hair growth signals and reducing stress and hormone effects.
5 citations
,
September 2020 in “Journal of The American Academy of Dermatology” Men can experience female pattern hair loss, needing different treatments.
4 citations
,
July 2006 in “British journal of dermatology/British journal of dermatology, Supplement” Testosterone increases hair follicle cell growth when beard or axillary skin cells are present together.
2 citations
,
August 2016 in “Experimental Dermatology” Finasteride treats baldness but may cause lasting sexual side effects.
January 2026 in “Dermatologic Therapy” Higher dihydrotestosterone (DHT) levels are linked to male pattern baldness.
May 2025 in “International Journal of Reproduction Contraception Obstetrics and Gynecology” Ovarian tumors should be considered when postmenopausal women show signs of virilization.
April 2019 in “Journal of the Endocrine Society” Glucocorticoid treatment lowered androgen levels but didn't improve hirsutism or ovulation and caused weight gain.
January 2017 in “Journal of cosmetology & trichology” A man with severe hair loss regrew hair after hormone treatment.
September 2016 in “Más dermatología” New factors in female hair loss include genetics, hormones, stress, and inflammation; future treatments should also focus on these areas and consider the patient's emotional well-being.
Women with androgenetic alopecia (hair loss) have normal prostate specific antigen levels but higher testosterone levels.
July 2011 in “British Journal of Dermatology” Hormone treatment caused hair loss, finasteride helped regrowth.
66 citations
,
November 2001 in “European journal of endocrinology” Low SHBG and high FAI, FT, and DHEAS levels are effective in identifying PCOS.
50 citations
,
February 2013 in “Annals of Clinical Biochemistry” Understanding how DHT works is important for diagnosing and treating hormone-related disorders.
47 citations
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August 2016 in “Fitoterapia” Some herbs and their components might help treat hair loss by affecting various biological pathways, but more research and regulation are needed.