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.
46 citations
,
May 2013 in “The journal of investigative dermatology/Journal of investigative dermatology” Significant progress was made in understanding PXE, but effective treatments are still needed.
38 citations
,
May 2000 in “Livestock production science” Giving high-quality protein or methionine supplements helps improve hair growth in Angora goats and, to a lesser extent, in Cashmere goats.
30 citations
,
October 2009 in “Journal of Veterinary Internal Medicine” A Pomeranian dog had rickets due to a new gene mutation, leading to severe symptoms and euthanasia.
23 citations
,
January 2019 in “Journal of wildlife diseases” Boreal caribou in northeastern British Columbia have significant health issues, including infections, tick infestations, and mineral deficiencies.
5 citations
,
March 2021 in “International Journal of Dermatology” Biotin supplementation during isotretinoin treatment for acne may help maintain skin hydration and improve hair growth.
5 citations
,
July 2017 in “International journal of endocrinology and metabolism/International journal of endocrinology and metabolism.” Two siblings with a genetic mutation had a form of rickets that doesn't respond to vitamin D.
4 citations
,
January 2023 in “Frontiers in Medicine” Zinc is important for skin health, and supplements can help treat various skin and hair disorders, but more research is needed for conditions like psoriasis and vitiligo.
4 citations
,
August 2019 Higher free testosterone levels can increase bone density and decrease body fat but may raise the risk of prostate cancer, hair loss, and benign prostate enlargement.
2 citations
,
March 2020 in “PubMed” Biotin deficiency is not a major cause of Telogen Effluvium hair loss.
COVID-19 infection and vaccination are linked to hair loss, especially in women and those with nutritional deficiencies.
January 2026 in “International Journal of Innovative Technologies in Social Science” Zinc is crucial for health, and deficiency can lead to immune, digestive, skin, and metabolic issues.
November 2025 in “Healthcare” Zinc levels don't significantly affect hair loss, so testing for zinc isn't necessary.
GLP-1 receptor agonists can cause skin and hair issues due to rapid weight loss, but these can be managed with proper care and treatments.
July 2024 in “Brazilian Journal of Clinical Medicine and Review” Hair loss after bariatric surgery is common due to nutrient deficiencies and rapid weight loss.
June 2024 in “jurnal ABDIMAS Indonesia” Vitamin D education and supplementation improve hair health in the elderly.
September 2023 in “F&S reports” PCOS may increase the risk of mental health issues like depression and anxiety.
Many people in Saudi Arabia use vitamin D supplements, but few experience toxicity, showing the need for professional guidance when taking these supplements.
January 2020 in “Turkiye Klinikleri Journal of Dermatology” People with chronic hair shedding had much lower vitamin D levels compared to healthy people.
Diet and supplements can significantly affect acne, with some foods and nutrients reducing and others worsening it.
400 citations
,
January 2014 in “British Journal of Sports Medicine” The consensus provided guidelines for treating the Female Athlete Triad and a system to decide when athletes can return to sports.
369 citations
,
June 2013 in “Biochimie” Myo-inositol supplements may improve insulin sensitivity and help with conditions like PCOS and gestational diabetes, but more research is needed.
7 citations
,
May 2012 in “Journal of veterinary diagnostic investigation” Some young Angus cattle had skin problems due to not enough vitamin A, which got better after they were given more vitamin A.
January 2025 in “Journal of Pharmacognosy and Phytochemistry” Marine-derived supplements may improve skin and hair health.
October 2024 in “Frontiers in Nutrition” Vitamin D deficiency is common in people with certain types of hair loss, like alopecia areata and female pattern hair loss.
30 citations
,
January 2023 in “EFSA journal” Adults should not consume more than 255 micrograms of selenium per day to avoid risk of hair loss and other side effects.
3 citations
,
November 2021 in “Applied Microscopy” Hair microscopy is a simple and cost-effective method to help diagnose systemic diseases in children.
November 2025 in “Dermatology and Therapy” The drinkable supplement increased hair growth and was safe for women with hair loss.
December 2024 in “Frontiers in Neurology” Testosterone with finasteride improved muscle and bone health in men with spinal cord injury.
11 citations
,
January 2014 in “Egyptian Journal of Dermatology and Venereology” Women losing hair might have lower levels of vitamin D.