Oral contraceptives may cause significant hair loss in women.
74 citations
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March 2006 in “Journal of Chromatography B” Hair analysis is promising for detecting drug misuse in livestock.
16 citations
,
January 2019 in “Neuropsychobiology” People with Lichen Planopilaris tend to be more depressed, have lower self-esteem, and a worse quality of life.
12 citations
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November 2018 in “Psychoneuroendocrinology”
10 citations
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May 2018 in “Forensic Science International” Shrunken heads retain some facial features and hair characteristics, allowing for limited individual identification.
10 citations
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November 2015 in “American Journal of Primatology” Monkeys with more anxious or inhibited temperaments tend to have less hair loss.
7 citations
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April 2022 in “Journal of pharmaceutical and biomedical analysis” The method can measure multiple steroids in human hair to study long-term steroid metabolism, especially in newborns and children.
5 citations
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May 2017 in “Journal of the European Academy of Dermatology and Venereology” The study found no significant difference in stress hormone levels between people with alopecia areata and healthy individuals, suggesting that the disease is not caused by an overactive stress response system.
2 citations
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December 2022 in “Metabolites” Hair analysis shows low progesterone in anorexia patients, unchanged by short-term weight gain.
2 citations
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May 2021 in “Scientific Reports” Stress is likely causing hair loss in Formosan macaques.
Social dynamics and individual traits affect hair plucking and health in rhesus macaques.
January 2026 in “Updates in clinical dermatology” Hair grows in cycles, and disruptions can cause hair loss.
October 2025 in “International Journal of Research in Dermatology” New laser technologies and methods are safer and more effective for hair removal on darker skin tones.
Inflammation and metabolic changes are linked to postpartum hair loss after a first C-section.
January 2025 in “Conservation Physiology” Bear hair grows 0.10 to 1.05 mm per day, varying by individual and season.
February 2024 in “Medicina-lithuania” Obesity and bariatric surgery can cause hair thinning and temporary hair loss due to nutritional deficiencies and stress.
Hair proteins in preschool children and their mothers could indicate developmental changes and health status.
Hair and nails can show hormone changes during puberty in dogs.
March 2022 in “Journal of drug delivery and therapeutics” Sea hibiscus leaf extract at 30% concentration in a hair tonic significantly increased hair growth in guinea pigs.
49 citations
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October 2022 in “PubMed” Hair loss is influenced by genetics, diet, and lifestyle, but more research is needed on nutrition's role.
13 citations
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July 2018 in “Obesity surgery” Over half of patients had hair loss after weight-loss surgery, especially women, linked to low zinc and vitamin B12 levels.
11 citations
,
October 2020 in “General and comparative endocrinology” Male C57BL/6 mice show age-related fluctuations in certain hormones and their ratios in both blood and hair.
8 citations
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April 2020 in “Journal of Ethnopharmacology” Herbs might help with hair loss, but more research is needed to confirm their safety and effectiveness.
3 citations
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August 2022 in “International Journal of Molecular Sciences” COVID-19 can cause hair loss, and treatments like PRP and stem cells might help.
3 citations
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January 2022 in “Neurotoxicity Research” Botulinum toxin may help reduce stress-related hair loss.
June 2026 in “Reports of Morphology” A nutrient-rich diet improved skin and hair health in stressed rats.
May 2026 in “Applied Biochemistry and Biotechnology” Lemon-derived vesicles may help hair grow.
September 2025 in “PubMed” Mechanical stimulation and new therapies show promise for hair regrowth.
September 2024 in “Journal Of Social Sciences And Humanites” A combined approach of medical treatments, natural remedies, diet, and stress management is best for hair regrowth in Cambodia.
September 2024 in “Journal of Investigative Dermatology” A new tool can analyze hair to detect changes due to hormones, genetics, and aging.