182 citations
,
December 2007 in “BJCP. British journal of clinical pharmacology/British journal of clinical pharmacology” Hair follicles significantly increase the speed and amount of caffeine absorbed through the skin.
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.
May 2021 in “Journal of the Endocrine Society” A patient produced cortisol after adrenalectomy, possibly due to residual tissue or other body parts making steroids.
August 2025 in “Tropical Journal of Natural Product Research” Celery extract and candlenut oil effectively and safely boost hair growth.
19 citations
,
March 2021 in “Obesity surgery” Many people experience hair loss after weight loss surgery, especially younger women, and it's linked to lower levels of zinc, folic acid, and ferritin.
January 2021 in “bioRxiv (Cold Spring Harbor Laboratory)” Mothers have more hair proteins than their children, with age-related differences in protein patterns, and some proteins in hair could indicate early childhood development.
62 citations
,
December 2013 in “Aaps Journal” Squarticles effectively deliver hair growth drugs to follicles and dermal papilla cells.
12 citations
,
January 2020 in “Analyst” Researchers found markers that can tell if hair has been bleached, which could improve hair test accuracy.
January 2026 in “Dermatology and Therapy” Poor sleep may lead to hair loss, and hair loss may affect sleep.
7 citations
,
June 2021 in “Amino acids” Human hair protein modifications could potentially indicate heart disease risk.
15 citations
,
May 1986 in “Journal of the American Veterinary Medical Association” Castration helped a dog with a tumor and hair loss by normalizing hormone levels and regrowing hair.
7 citations
,
May 2021 in “Dermatologic Clinics” Nutraceuticals like Ashwagandha and Astaxanthin may help with hair loss, but supplement regulation is challenging.
1 citations
,
December 2006 in “Burns” New therapies for burn wounds show promise in reducing pain, infection risk, and improving healing and physical outcomes.
2 citations
,
December 2021 in “BMC veterinary research” Long-term use of difluprednate eye drops in dogs can lead to hair loss and hormone imbalance.
26 citations
,
February 2003 in “The journal of investigative dermatology/Journal of investigative dermatology” An enzyme other than TNAP might be responsible for vitamin B-6 metabolism in the skin.
October 2023 in “Scientific Reports” Oxytocin may help hair grow by increasing hair growth-related genes and factors.
53 citations
,
October 1984 in “Endocrine reviews” Excessive hair growth in women often has no known cause and is not linked to race or other hormonal symptoms.
44 citations
,
July 2011 in “Dermato-endocrinology” Thyroid hormone affects skin health, with too little causing rough, pale skin and too much leading to smooth, thin skin, and may also impact wound healing and skin conditions.
June 2007 in “Journal of The Royal Society for The Promotion of Health” Smoking doubles the risk of blindness, and physical exercise helps dyslexic children read better.
102 citations
,
July 2020 in “International journal of molecular sciences” Hormones like testosterone and estrogen significantly affect hair growth and structure.
November 2024 in “Frontiers in Endocrinology” Hair analysis can help diagnose adrenal disorders non-invasively.
1 citations
,
July 2022 in “Case reports in endocrinology” A 70-year-old woman with a malignant adrenal tumor improved after surgery and radiotherapy.
October 2025 in “Journal of the Endocrine Society” Surgery improved symptoms and normalized hormone levels in a woman with an adrenal tumor.
1 citations
,
October 2020 in “PubMed” Hormone testing may not be very helpful in diagnosing female pattern hair loss.
7 citations
,
January 2022 in “Evidence-based complementary and alternative medicine” Ginger supplements helped reduce symptoms and improve metabolic health in hypothyroid patients.
68 citations
,
April 1965 in “General and Comparative Endocrinology” The pituitary gland controls seasonal fur color changes in weasels.
March 2025 in “medRxiv (Cold Spring Harbor Laboratory)” Hair proteomics could be a promising non-invasive way to identify stress-related disorders.
4 citations
,
September 2015 in “Case Reports” A man fainted and felt unwell after using a strong hair growth product, but got better when he stopped using it.
June 2025 in “Naunyn-Schmiedeberg s Archives of Pharmacology” Herbal remedies may help with hair loss but need more research.
May 2022 in “CMAJ. Canadian Medical Association journal” Rosella C. believes an earlier diagnosis of Cushing disease could have prevented severe symptoms.