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January 2020 in “Frontiers in Endocrinology” OCT4 helps granulosa cell growth in early-stage follicles, and FSH increases OCT4 through specific pathways.
May 2025 in “Science Advances” PIEZO1 helps keep hair follicle stem cells inactive, affecting hair growth.
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June 1997 in “The Journal of Clinical Endocrinology & Metabolism” The treatment successfully lowered testosterone levels and reduced symptoms.
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April 2017 in “PubMed” Fat cells near hair follicles may affect hair growth and could help treat baldness.
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January 2012 in “Nature Reviews Molecular Cell Biology” Stem cell offspring help control their parent stem cells, affecting tissue health, healing, and cancer.
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March 2022 in “International Journal of Environmental Research and Public Health” Certain brain hormones and chemicals are linked to the development of Polycystic Ovary Syndrome.
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November 2006 in “Journal of Endocrinology” Prolactin slows down hair growth in mice.
September 2019 in “The journal of investigative dermatology/Journal of investigative dermatology” Mouse skin glands need healthy nerves to grow properly during hair growth phases.
September 2019 in “Journal of Investigative Dermatology” BMPs are important for hair growth and can counteract the negative effects of androgens on hair follicle stem cells.
September 2025 in “PubMed” Mechanical stimulation and new therapies show promise for hair regrowth.
PTHrP is important for bone formation and may be targeted for osteoporosis treatment and longevity therapies.
2 citations
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March 2003 in “Endocrine Practice” The woman's symptoms and tests suggest her adrenal glands are producing too many male hormones.
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November 2013 in “PLoS ONE” Estrogen and androgen signals control synaptic changes in rat brains.
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November 1983 in “British journal of dermatology/British journal of dermatology, Supplement” Testosterone increases hamster hair growth; cyproterone acetate reduces it.
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December 2007 in “Journal of Investigative Dermatology” Hair follicles evolved from oil glands, with hair aiding secretion transport.
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December 2024 in “Clinical Endocrinology” PCOS symptoms can improve with specific treatments for pituitary adenomas.
June 2015 in “Vestnik dermatologii i venerologii” Growth factors influence hair growth and hair loss.
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March 2005 in “Clinical and Experimental Dermatology” Autoimmunity can cause both alopecia areata and idiopathic primary hypophysitis.
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October 2020 in “PubMed” Hormone testing may not be very helpful in diagnosing female pattern hair loss.
Allopregnanolone may help reduce inflammation and symptoms related to post-finasteride syndrome.
Moderate immune responses help hair growth, while excessive responses slow it down.
November 2025 in “Frontiers in Endocrinology” A rare tumor caused unusual hormone production leading to Cushing syndrome.
138 citations
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June 2012 in “Genes & Development” Sonic hedgehog signaling is crucial for hair growth and maintaining hair follicle identity.
September 2003 in “Faculty Opinions – Post-Publication Peer Review of the Biomedical Literature” GLABRA2 gene controls root-hair growth by regulating phospholipid signaling.
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February 2024 in “Growth Hormone & IGF Research” Dihydrotestosterone (DHT) stops hair growth in mice by lowering a growth factor important for hair.
March 2025 in “Molecular Medicine” Cholesterol helps hair grow by activating nerves and boosting hair follicle stem cells.
54 citations
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May 1994 in “Veterinary Pathology” PTHrP is higher in certain dog tumors and may act as a local growth factor.
Melatonin helps regulate hair growth and may treat hair loss.
1 citations
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January 1985 in “Protides of the biological fluids” Injecting monocyto-angiotropin into hare skin increases hair growth by forming new blood vessels.