September 2020 in “Annals of the National Academy of Medical Sciences. India” COVID-19 can cause skin issues like "COVID toes," rashes, hair loss, and hand eczema, and dermatologists are important for recognizing these signs.
15 citations
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June 1996 in “Journal of Pharmacy and Pharmacology” Caffeine levels in hair and blood can indicate liver health.
6 citations
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April 2012 in “Journal of Oral Pathology and Medicine” Rushton's hyaline bodies form from hair keratin and blood substances.
2 citations
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May 2022 in “Diagnostics” Vitamin D levels in hair don't match those in blood, so hair isn't a reliable indicator of Vitamin D status.
April 2019 in “Journal of the Endocrine Society” An over-the-counter vitamin/mineral supplement improved hair loss and blood sugar control in a woman with non-classic 11-hydroxylase deficiency.
118 citations
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December 2003 in “Mechanisms of Ageing and Development” Thymosin β4 helps heal wounds, grow hair, and improve blood vessel formation.
61 citations
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April 2014 in “The Journal of Steroid Biochemistry and Molecular Biology” Finasteride affects brain and blood steroids, causing lasting sexual and emotional side effects.
56 citations
,
January 2008 in “Dermatology” Higher iron levels in the blood are not linked to increased hair loss in women.
52 citations
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January 2003 in “Journal of Investigative Dermatology” Thrombospondin-1 is crucial for hair follicle regression and reduced blood vessel growth during the catagen phase.
45 citations
,
October 2014 in “Stem cell research & therapy” Modified rat stem cells on a special scaffold improved blood vessel formation and wound healing in skin substitutes.
25 citations
,
November 1987 in “British Journal of Dermatology” Minoxidil didn't increase scalp blood flow for hair growth, but hexyl nicotinate did.
17 citations
,
May 2014 in “Cell transplantation” Genetically modified stem cells from human hair follicles can lower blood sugar and increase survival in diabetic mice.
13 citations
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January 2021 in “Journal of Cellular and Molecular Medicine” Thymosin β4 may boost hair growth by aiding stem cell movement and blood vessel formation.
11 citations
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March 2015 in “Life sciences” Vitamin D3-activated cell byproduct promotes hair growth in mice by increasing blood vessel growth.
10 citations
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November 2022 in “Protein & Cell” Quercetin significantly helps hair growth by activating hair follicles and improving blood vessel formation around them.
8 citations
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March 2020 in “Colloids and surfaces. B, Biointerfaces” Heating hair proteins changes their structure and may improve their blood clotting ability.
7 citations
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January 2016 in “PubMed” Delphinium staphisagria seeds can promote hair growth safely by increasing blood vessel formation.
4 citations
,
May 2021 in “Molecules” The hair test for vitamin D could be a useful alternative to blood tests, providing a longer-term vitamin D status, but more research is needed.
3 citations
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August 2018 in “Stem cells international” Hair follicle cells help maintain and support stem cells and blood cell formation.
1 citations
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January 2008 in “Hair transplant forum international” Hair restoration surgery can lead to serious complications like blood clots.
1 citations
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January 2011 in “China Modern Medicine” Chinese Herbal Hair Renewal Liquid improves blood flow in mice ears.
April 2024 in “Clinical, cosmetic and investigational dermatology” Salvianolic Acid B helps hair grow by reducing cell stress and increasing blood flow to hair follicles.
April 2015 in “MOJ Cell Science & Report” Rat hair follicle stem cells can be used to improve blood vessel growth in engineered skin.
November 2014 in “Surgical research updates” Platelet Rich Plasma (PRP) may improve hair transplant success by increasing blood vessel and hair follicle growth.
The modified stem cells with VEGF165 in a special scaffold improved blood vessel growth and wound healing for skin repair.
December 2025 in “Microbes and Infectious Diseases /Microbes and Infectious Diseases” Fungi and iron deficiency are linked to hair loss in alopecia patients.
Topical minoxidil increases hair density in androgenetic alopecia but has unclear clinical significance.
October 2023 in “Journal of The American Academy of Dermatology” Taking a small dose of the hair growth medicine minoxidil by mouth does not really change your blood pressure.
April 2023 in “The journal of investigative dermatology/Journal of investigative dermatology” The study suggests that a specific type of immune cell, memory-like NK cells, may increase during active hair loss in Alopecia areata.
August 2020 in “International Journal of Clinical Practice” No link between hair loss and blood groups or Rhesus factor.