Applying thyroid hormones to the scalp can help hair grow.
24 citations,
September 2014 in “PloS one” Thyroid hormone receptors are essential for hair growth and wound healing.
9 citations,
July 2014 in “Experimental Dermatology” PTHRP agonists can stimulate hair growth, especially in damaged follicles, while antagonists may initially increase growth but ultimately inhibit it.
Testosterone and dihydrotestosterone can slow down the growth of certain hair follicle cells.
January 2023 in “Journal of applied animal research” Short photoperiods improve cashmere growth and quality in goats by changing hormone levels and gene expression.
34 citations,
July 1993 in “The journal of investigative dermatology/Journal of investigative dermatology” Human hair growth is influenced by androgen hormones, and red deer mane follicles have similar hormone receptors.
8 citations,
April 2014 in “Anti-Cancer Drugs” A hormone linked to collagen helps hair grow back in mice after chemotherapy, and may also prevent bone loss.
June 2023 in “Clinical and Experimental Dermatology” Gender-affirming hormone therapy changes hair growth in transgender people, with feminizing therapy reducing hair and masculinizing therapy increasing it, but sometimes additional treatment is needed.
January 1998 in “KAGAKU TO SEIBUTSU” The document suggests that male hormones likely affect hair growth and baldness, and future treatments might involve stem cells and androgen-independent cells.
176 citations,
August 2000 in “The Journal of clinical endocrinology and metabolism/Journal of clinical endocrinology & metabolism” Hormone treatments in transsexual individuals reduce hair growth and oil production in male-to-females and increase them in female-to-males.
22 citations,
November 2007 in “Journal of Investigative Dermatology Symposium Proceedings” Hair growth and health are influenced by stress and hormones.
April 2024 in “Journal of endocrinological investigation” Topical minoxidil helps transgender individuals assigned female at birth grow more facial hair.
November 2023 in “International Journal of Women's Dermatology” Hormone replacement therapy may improve hair growth in the frontal hairline of postmenopausal women with hair loss.
5 citations,
January 2021 in “Biomedicine & Pharmacotherapy” Policosanol helps treat hair loss by balancing hormones and supporting 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.
48 citations,
September 1993 in “The journal of experimental zoology/Journal of experimental zoology” Melatonin treatment started hair growth in goats and affected their hormone levels.
29 citations,
February 1987 in “General and comparative endocrinology” Thyroid and gonadal hormones control seasonal hair growth and molting in male European badgers.
15 citations,
May 2020 in “BMC complementary medicine and therapies” Polygonum multiflorum extract helps hair grow longer and fights the effects of hormones that cause hair loss.
3 citations,
January 1988 in “PubMed” High prolactin levels can cause skin and hair symptoms similar to those caused by hormone imbalances.
1 citations,
October 2023 in “Biology” Fasting in hens affects thyroid hormones, which regulate feather and hair growth.
May 2023 in “International journal of pharmaceutical sciences and medicine” Sunflower oil was found to promote hair growth in mice with hormone-induced hair loss.
24 citations,
March 2022 in “Frontiers in plant science” Plant root hair growth is mainly controlled by hormones like auxin and ethylene, which promote growth, while others like brassinosteroid inhibit it.
19 citations,
October 2017 in “The FASEB Journal” Male hormones cause different growth in identical human hair follicles due to their unique epigenetic characteristics.
July 2001 in “Pediatrics in review” The girl's increased hair growth and other symptoms were due to a hormone-secreting ovarian tumor, which was successfully treated with surgery.
12 citations,
February 2016 in “Biochemical and Biophysical Research Communications” Sulforaphane may help with hair growth by breaking down a hormone that causes hair loss.
3 citations,
February 2019 in “Journal of Cosmetic Dermatology” The effects of estrogen on human scalp hair growth are unclear and need more research.
April 2023 in “Journal of The American Academy of Dermatology” Some drugs linked to growth hormones may increase the chance of hair loss in women.
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.
62 citations,
July 1993 in “Journal of Investigative Dermatology” Hair growth is influenced by interactions between skin layers, growth factors, and hormones, but the exact mechanisms are not fully understood.
March 2017 in “bioRxiv (Cold Spring Harbor Laboratory)” Plant root hair growth is controlled by the hormone auxin, which affects the production of certain oxygen-related molecules through a specific process.