October 2023 in “Èkologiâ čeloveka” People in Moldova have less selenium in their hair than recommended, which may contribute to hair loss.
16 citations
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December 2005 in “Journal of Animal Physiology and Animal Nutrition” Moderate selenium levels in a dog's diet are best for hair growth.
October 2014 in “Journal of Nutrition & Food Sciences” Higher copper and lower chromium and selenium in hair are linked to insulin resistance in visceral-obese adults.
21 citations
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April 2009 in “Trace Elements and Electrolytes” Autistic children have lower iron and higher selenium in their hair.
May 2014 in “The Journal of Alternative and Complementary Medicine” Higher levels of chromium, selenium, and copper in hair are linked to increased insulin resistance in visceral-obese adults.
35 citations
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January 2001 in “Journal of Animal Science” High dietary selenium, especially inorganic, causes weight loss and selenosis in pigs, with effects varying by hair color.
3 citations
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April 2023 in “Journal of Veterinary Internal Medicine” Dogs with epilepsy have different hair mineral levels than healthy dogs, possibly due to epilepsy or its treatment.
51 citations
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March 1986 in “Acta Dermato Venereologica” Alopecia patients had similar element levels to normal people, except for differences in copper and low selenium.
Urinary and serum selenium levels are the best indicators of selenium intake in dogs.
49 citations
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February 2020 in “Scientific reports” The nanohybrid system significantly improved wound healing and showed strong antibacterial activity.
January 2004 in “Chinese Journal of Aesthetic Medicine” High levels of sodium fluoride harm hair growth, but sodium selenite can reduce this harm.
January 2007 in “Chinese journal of plastic surgery” Sodium fluoride increases cell death in hair follicles, but sodium selenite can reduce this effect.
January 2005 in “The Chinese Journal of Dermatovenereology” High fluoride increases damage in hair follicles, but low selenium can reduce this damage at lower fluoride levels.
21 citations
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June 1991 in “Journal of Inherited Metabolic Disease” Selenium deficiency caused symptoms in a child, which improved with selenium supplements.
18 citations
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September 2011 in “Livestock science” Maternal Nano-Se supplements improve fetal hair follicle development in cashmere goats.
Sodium fluoride can harm hair follicles, but sodium selenite can help protect them.
382 citations
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February 2010 in “Archives of Internal Medicine” A manufacturing error in a dietary supplement caused severe selenium poisoning, affecting many people and highlighting the need for stricter quality control.
11 citations
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January 2016 in “BMC veterinary research” Urinary Se to creatinine ratio, serum Se, and glutathione peroxidase are effective early biomarkers for selenium status in dogs.
23 citations
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August 1989 in “American Journal of Veterinary Research” High selenium diets in pigs cause health issues like weight loss, hair loss, and nerve damage.
11 citations
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January 1993 in “Journal of Veterinary Diagnostic Investigation” Horses in western Iowa got sick from high selenium in local alfalfa hay.
1 citations
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May 2016 in “Journal of Veterinary Diagnostic Investigation” Exotic lice infest 45% of California mule deer, with younger and selenium-deficient deer more vulnerable.
September 2025 in “Clinical Toxicology” Contaminated wheat caused hair loss and other symptoms due to high selenium, but washing it with alkaline water helped.
November 2025 in “Biological Trace Element Research” Hair mineral analysis doesn't reliably show blood mineral levels but may help track long-term mineral trends.
The conclusion is that hair supplement ingredients may be unsafe and should be disclosed and proven safe before use.
Four bacteria from the lab were found to be resistant to selenium.
1 citations
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August 2011 in “DOAJ (DOAJ: Directory of Open Access Journals)” Higher zinc and iron intake leads to less hair loss after bariatric surgery.
Hair samples showed changes in chemical elements over time and location in Venezuela.
January 1996 in “Human Ecology Forum” Selenium is important for health but must be consumed in the right amount to avoid health issues.
14 citations
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October 2020 in “Natural Products and Bioprospecting” Various treatments, including FDA-approved drugs, natural products, and oral supplements, can help with hair loss, but a patient's medical history and potential allergies should be considered when choosing a treatment.
January 1984 in “Isotopenpraxis Isotopes in Environmental and Health Studies” Trace element levels in hair differ in people with thyroid diseases.