January 2006 in “Seibutsu Butsuri” Curly and straight hair differ in how their internal fibers are arranged.
29 citations
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May 2020 in “npj Regenerative Medicine” Immune cells help regulate hair growth, and better understanding this can improve hair loss treatments.
15 citations
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January 2016 in “International journal of trichology” Low vitamin D3 levels are significantly linked to hair loss, especially in female students.
10 citations
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October 2020 in “Frontiers in Cell and Developmental Biology” Wounds can regenerate hair in young mice, but this ability declines with age, offering insights for improving tissue regeneration in the elderly.
9 citations
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September 2016 in “Forensic science international” Hair area varies with age and sex, but hair index and medullary index do not.
7 citations
,
May 2019 in “British Journal of Dermatology” Transgender and nonbinary individuals experience hair loss, with transmen on testosterone seeing more severe hair loss, while feminizing hormones may stabilize hair loss in transwomen.
6 citations
,
April 1996 in “Journal of histochemistry and cytochemistry/The journal of histochemistry and cytochemistry” TGF-alpha is present in sheep and ferret skin and may affect hair growth without directly stimulating cell proliferation.
5 citations
,
January 2005 in “PubMed” Apoptosis is important in the hair cycle of dogs.
4 citations
,
October 2022 in “Genes” Our microbiome may affect the development of the hair loss condition Alopecia Areata, but more research is needed to understand this relationship.
4 citations
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December 2014 in “European Journal of Chemistry” Iron chloride helps create compounds that could be useful in medicine, like treating hair loss.
1 citations
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December 2021 in “Asian journal of medicine and health” Many women in Saudi Arabia know vitamin D deficiency can cause hair loss, but more need to take supplements.
1 citations
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November 2015 in “Journal of Clinical Dermatology” Hair loss causes social and psychological stress, leading people to spend more on treatment, regardless of how severe the hair loss is.
1 citations
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February 2025 in “Frontiers in Endocrinology” Diet and sunlight are important for maintaining good vitamin D levels.
October 2025 in “Medical Journal of Babylon” Higher testosterone and lower Vitamin D levels are linked to hair loss in female COVID-19 patients.
September 2025 in “Journal of the American Academy of Dermatology” Reducing SFRP1 can promote hair growth and may help treat hair loss.
August 2025 in “Journal of the Korean Society of Cosmetology” Hair loss stress increases interest in appearance and buying scalp care products.
Good nutrition may help prevent premature hair graying.
July 2024 in “Nursing Research” Hair and nail cortisol levels can show long-term stress in young males.
October 2023 in “Journal of Gandhara medical and dental sciences” Quarantine increased hair fall, especially in young women, with no direct link to short sun exposure.
January 2022 in “Social Science Research Network” Pyruvate Kinase M2 helps hair grow by linking energy production and a key hair growth pathway.
September 2019 in “Journal of Investigative Dermatology” Botanical extracts from peas and chia seeds improved scalp health and protected hair from pollution.
Hair cortisol content can indicate cortisol exposure and varies with age, puberty, and BMI in youth.
January 1959 in “Acta medica Scandinavica” A balanced diet with essential vitamins, especially B-complex, prevents hair loss.
March 2026 in “Journal of the mechanical behavior of biomedical materials/Journal of mechanical behavior of biomedical materials” Bleaching and UV exposure significantly damage hair.
February 2024 in “Psychoneuroendocrinology” Higher prenatal anxiety is linked to lower cortisol levels in newborns' hair.
December 2023 in “Journal of biobased materials and bioenergy” The algae grew better and fixed nitrogen more efficiently when they worked together, using nitrogen and iron.
January 2022 in “Indian journal of dermatopathology and diagnostic dermatology” Women with diffuse hair loss often have lower iron and vitamin D levels, but their thyroid function is typically normal.
March 2020 in “bioRxiv (Cold Spring Harbor Laboratory)” Health issues in retired breeder guinea pigs don't affect experiment success.
3 citations
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May 2016 in “Journal of Cutaneous Medicine and Surgery” The document suggests using small syringes, distraction techniques, topical anesthetics, and specific drugs to ensure a pain-free experience during hair restoration surgery.
A new system for classifying curly hair types using precise measurements can improve hair care products and cultural inclusion.