21 citations
,
January 1999 in “Molecular and Cellular Biochemistry” Niacin deficiency makes rats more sensitive to cancer-causing chemicals.
18 citations
,
January 2004 in “Dermatologic Clinics” Skin problems in older people can indicate hormonal diseases, nutritional deficiencies, or conditions like diabetes, menopause, and HIV.
October 2019 in “Postgraduate Medical Journal” Pellagrous dermatitis, caused by niacin deficiency, can be cured with vitamin supplements.
July 2018 in “International journal of clinical & experimental dermatology” Eat a balanced diet for healthy hair; only use supplements if you have a proven nutrient deficiency.
8 citations
,
September 2019 in “Eating and Weight Disorders - Studies on Anorexia, Bulimia and Obesity” A woman with anorexia nervosa improved after treatment for pellagra, reminding doctors to check for this deficiency in patients with eating disorders.
43 citations
,
October 1955 in “The journal of nutrition/The Journal of nutrition” Germ-free rats need biotin for growth and have different vitamin metabolism compared to regular rats.
A boy on a ketogenic diet and anti-epileptic drugs developed skin issues due to stopping vitamin supplements, which improved with proper supplementation.
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.
4 citations
,
March 2006 in “Journal of renal nutrition” Dialysis patients benefit from water-soluble vitamins but need careful management to avoid risks.
79 citations
,
January 2017 in “Dermatology practical & conceptual” Correcting nutrient deficiencies may help with hair loss, but the benefits of supplements without a deficiency are uncertain and could be harmful.
1 citations
,
February 2023 in “Digestive diseases and sciences” Gastroparesis may cause hair loss due to micronutrient deficiencies, and multivitamins might help.
April 2026 in “Al-Kufa University Journal for Biology” Zinc and iron levels drop after bariatric surgery, needing careful monitoring and supplements.
October 2025 in “International Journal For Multidisciplinary Research” Ayurvedic treatment improved Vitamin B12 levels and symptoms.
24 citations
,
June 2010 in “Clinics in Dermatology” Taking too many vitamin and mineral supplements can cause serious health problems.
December 2020 in “International journal of research in ayurveda and pharmacy” Eating well and avoiding synthetic hair products are key for healthy hair.
50 citations
,
November 2010 in “Otolaryngologic Clinics of North America” Recognizing oral symptoms can help diagnose and treat blood and nutritional diseases early.
11 citations
,
October 2015 in “Journal der Deutschen Dermatologischen Gesellschaft” Women who had bariatric surgery risk nutritional deficiencies causing skin issues during pregnancy and breastfeeding.
10 citations
,
July 2022 in “Journal of the Turkish-German Gynecological Association” Vitamins B3, B6, C, and iron intake affect hormone levels in women with certain types of PCOS.
10 citations
,
January 2016 in “Global Dermatology” Zinc helps manage skin disorders and deficiencies can worsen some conditions.
March 2026 in “International Journal of Clinical Dermatology” Iron deficiency can cause certain skin issues like eczematous hand and perioral lesions.
October 2025 in “Dermatology and Therapy” Bariatric surgery can improve some skin issues but may worsen others due to nutritional deficiencies.
June 2024 in “Journal of Psychiatry Spectrum” Iron deficiency can cause psychiatric symptoms that improve with proper treatment.
239 citations
,
July 2002 in “Clinical and Experimental Dermatology” Low iron and L-lysine levels can cause hair loss in women, and increasing these nutrients can reduce hair shedding.
166 citations
,
November 2008 in “Expert Review of Endocrinology & Metabolism” Biotin and biotinidase are essential to prevent health issues, and deficiencies require lifelong supplementation.
98 citations
,
October 2012 in “Dermatologic Clinics” Eating the right nutrients can improve hair health, but taking extra supplements usually doesn't help unless you have a deficiency.
82 citations
,
August 2017 in “Cell Reports” An imbalanced gut and lack of biotin can cause hair loss in mice.
63 citations
,
May 2017 in “American Journal of Clinical Dermatology” People with alopecia areata often have lower levels of vitamin D, zinc, and folate, but more research is needed to understand if supplements can help treat it.
57 citations
,
February 2018 in “Journal of the American Academy of Dermatology” Biotin supplements are not proven to improve hair or nails and may interfere with medical tests.
36 citations
,
January 2012 in “International Journal of Trichology” Losing eyelashes or eyebrows can be a sign of many different health problems and needs a careful approach to treat effectively.
30 citations
,
September 2017 in “Clinics in Dermatology” Men with common hair loss may have a higher risk of heart disease and diabetes, and should be checked for these conditions.