January 2026 in “Ankara Medical Journal” Pregnancy-related stress may cause hair loss in women in their third trimester.
20 citations
,
July 2006 in “Veterinary dermatology” Melatonin helped some Pomeranian dogs regrow hair, but it wasn't linked to estrogen receptors.
March 2026 in “European Journal of Medical and Health Research” Women with hair loss had lower IGF-1 levels.
October 2023 in “Scientific reports” Dexamethasone affects hair growth by altering levels of proteins that either promote or inhibit hair follicle growth.
122 citations
,
July 2005 in “The FASEB journal” Hair follicles produce and respond to melatonin, affecting hair growth and sensitivity to estrogen.
59 citations
,
August 1998 in “International Journal of Dermatology” Genetics and hormones cause hair loss; finasteride treats it safely.
January 2024 in “International Journal of Herbal Medicine” Melanin is important for hair color, health, and UV protection.
1 citations
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January 2017 in “Springer eBooks” Hair follicles are important for drug delivery through the skin, but better methods are needed to understand and improve this process.
6 citations
,
October 2018 in “PLoS ONE” Stress can slow hair growth and affect skin color by impacting the body's stress response system.
April 2024 in “Journal of wildlife diseases” Muskox hair growth rates vary widely, so a single growth rate can't be used for all populations.
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.
November 2021 in “Egyptian Journal of Medical Microbiology” COVID-19 protective measures led to skin irritation, hair loss, and brittle nails; using skin-friendly products and a healthy diet is recommended.
166 citations
,
August 2010 in “Proceedings of the National Academy of Sciences of the United States of America” Scientists found a new, less invasive way to study body clocks using hair cells, which shows shift workers' body clocks don't match their lifestyles.
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.
9 citations
,
July 2020 in “Journal of Animal Physiology and Animal Nutrition” Melatonin given to pregnant rabbits improved their babies' fur quality.
4 citations
,
August 2025 in “Scientific Reports” Hair analysis can effectively detect diabetes and aging markers.
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 2026 in “Al-Kufa University Journal for Biology” Finasteride lowers cortisol and raises testosterone levels in rats.
April 2025 in “Journal of the Faculty of Medicine Baghdad” Alopecia areata patients may have higher T3 and cortisol levels, suggesting a hormonal link.
January 2026 in “Journal of Epidemiology” Severe hair loss is linked to higher risks of hypertension and diabetes, especially in younger adults and women.
21 citations
,
October 2011 in “PloS one” Certain molecules in hair change with age and could be used for cosmetic treatments.
10 citations
,
September 2020 in “Metabolites” Hair color and length affect metabolite profiles in hair, so they should be considered in hair analysis.
3 citations
,
March 2021 in “Metabolites” Hair loss causes differ between men and women due to changes in hormone levels and inflammation-related pathways.
2 citations
,
August 2020 in “Natural Product Communications” A mix of Platycladus orientalis leaf extract and alpha-terpineol helps mice grow hair by increasing growth factors and cell growth.
July 2024 in “Annals of Phytomedicine An International Journal” Herbal ingredients like aloe vera and hibiscus can help with hair problems like hair loss and dandruff.
Forensic hair analysis for drugs is now more reliable and accurate.
218 citations
,
January 2013 in “The Lancet Oncology” Chemotherapy causes hair loss by damaging hair follicles and stem cells, with more research needed for prevention and treatment.
159 citations
,
December 2007 in “American Journal of Pathology” Stress-related substance P may lead to hair loss and negatively affect hair growth.
130 citations
,
August 2015 in “Experimental Dermatology” Human hair follicle organ culture is a useful model for hair research with potential for studying hair biology and testing treatments.
125 citations
,
September 2001 in “The FASEB Journal” Stress can cause hair loss by negatively affecting hair follicles and this effect might be reversed with specific treatments.