June 2023 in “JAAD international” Patients with skin of color are more likely to use supplements for hair loss than Caucasian patients, but the effectiveness of these supplements is uncertain and they can be expensive.
June 2021 in “Asian Journal of Medical Sciences” Vitamin B12 deficiency can cause reversible skin darkening.
35 citations
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January 2013 in “International Journal of Trichology” Kids with early graying hair often have low levels of calcium, ferritin, and vitamin D3.
January 2015 in “The Annals of Clinical and Analytical Medicine” Patients with alopecia areata had higher TSH levels.
March 2002 in “Clin-Alert” In 2002, various drugs caused serious side effects, including vitamin B12 deficiency, heart issues, blindness, hypersexuality, allergic reactions, blood clotting problems, pupil dilation, capillary leak syndrome, muscle breakdown, hepatitis, skin reactions, and lupus.
1 citations
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January 2013 in “Surgical Science” Vitamin and iron deficiencies are similar in both surgeries, with standard supplementation recommended.
December 2022 in “Zenodo (CERN European Organization for Nuclear Research)” Puradrop Extra Strength Gummies claim to support weight loss and boost energy using natural ingredients.
April 2015 in “Archives of disease in childhood” A chubby child can still be malnourished.
6 citations
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January 2020 in “Postepy Dermatologii I Alergologii” Check and treat low iron and vitamin D levels in people with hair loss.
October 2025 in “Pakistan Journal of Health Sciences” Low serum ferritin is linked to hair loss in women.
January 2023 in “Pakistan Armed Forces Medical Journal” People with vitiligo tend to have lower vitamin D levels.
July 2021 in “PARIPEX INDIAN JOURNAL OF RESEARCH” Knuckle darkening can be an early sign of vitamin B12 deficiency.
34 citations
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April 1973 in “The American journal of clinical nutrition” Not enough vitamin B6 in pregnant rats' diets caused poor development and health in their babies.
5 citations
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May 2020 in “Diagnostics” Lower zinc levels may predict less effective hair loss treatment.
2 citations
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December 2014 Low biotin intake during pregnancy can affect biotin transport in mothers and fetuses.
1 citations
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August 2023 in “Cutis” Low ferritin levels can indicate iron deficiency as a cause of hair loss.
1 citations
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February 2022 in “Open Access Macedonian Journal of Medical Sciences” Low zinc levels might contribute to early hair graying.
January 2025 in “International Journal of Dermatology Venereology and Leprosy Sciences” People with acne tend to have lower iron levels.
July 2018 in “Journal of College of Medical Sciences-nepal” Women with certain types of hair loss may have low iron levels.
3 citations
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January 2017 in “Journal of Pakistan Association of Dermatology” Women with certain types of hair loss may have low iron levels, and iron supplements could help.
December 2019 in “bioRxiv (Cold Spring Harbor Laboratory)” Redheaded people have higher levels of a vitamin D precursor, suggesting red hair may be an adaptation for better vitamin D synthesis in areas with less sunlight.
January 2012 in “Vitamins & trace elements” Smoking and drinking can lower vitamin levels and potentially trigger early hair loss, but overall vitamin levels don't seem to affect hair loss duration.
45 citations
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April 2019 in “Scientific Reports” Higher CO2 levels help a cyanobacterium grow better by boosting photosynthesis and carbon uptake.
37 citations
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March 2014 in “Journal of Trace Elements in Medicine and Biology” Lower hair zinc and copper levels found in Turkish males with hair loss; higher BMI linked to less hair zinc.
4 citations
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July 2019 in “IOP conference series” Most young men with early gray hair have low vitamin D but normal iron levels.
December 2025 in “Obesity Surgery” One-anastomosis gastric bypass leads to lower zinc levels and more symptoms than sleeve gastrectomy.
5 citations
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June 2020 in “Experimental dermatology” Redheaded people may have evolved to efficiently make vitamin D in areas with less sunlight.
December 2025 in “Cureus” Low serum ferritin is linked to hair loss in women.
September 2024 in “African Journal of Biomedical Research” Alopecia areata patients have lower vitamin D and slightly lower copper levels, so these should be checked.
January 2018 in “Trace Elements in Medicine (Moscow)” Children with autism have different levels of certain metals and elements in their hair and blood, affecting symptoms.