October 2025 in “Medical Journal of Babylon” Higher testosterone and lower Vitamin D levels are linked to hair loss in female COVID-19 patients.
August 2024 in “Journal of Cosmetic Dermatology” Telogen effluvium is linked to deficiencies in iron, vitamin B12, and thyroid function.
July 2023 in “Current Developments in Nutrition”
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.
18 citations
,
November 2009 in “Calcified tissue international” A genetic mutation caused severe rickets and alopecia in an Indian patient, but high-dose calcium and phosphate treatment improved their condition.
3 citations
,
August 2024 in “Middle East Fertility Society Journal” Vitamin D may help improve hormone levels in women with PCOS.
September 2023 in “Clinical, Cosmetic and Investigational Dermatology” Higher SHBG levels are linked to less severe hair loss in women, but vitamin D levels don't seem to affect hair loss.
36 citations
,
January 2017 in “Journal of Obstetrics and Gynaecology Research” The review found no clear link between vitamin D receptor gene variations and polycystic ovary syndrome.
March 2026 in “Nutrients” Vitamin D is needed for metformin to lower prolactin effectively.
October 2023 in “Journal of Preventive Diagnostic and Treatment Strategies in Medicine” Low ferritin and Vitamin D levels may cause hair loss after COVID-19.
March 2025 in “Institutional Repositories DataBase (IRDB)” The testes significantly contribute to vitamin D metabolism and may affect male reproductive health and conditions like hair loss.
12 citations
,
January 2016 in “Endocrinology, diabetes & metabolism case reports” Testosterone therapy improved physical and social health in a male with 49,XXXXY syndrome.
July 2025 in “Journal of Dermatology for Physician Assistants” Specific tests may help diagnose alopecia, but their treatment impact is unclear.
December 2020 in “Journal of Drugs in Dermatology” The document concludes that more research is needed to confirm if blood tests for things like iron and vitamin D are helpful for hair loss from Telogen effluvium.
71 citations
,
August 2019 in “The journal of sexual medicine” Testosterone treatment effectively causes male physical development in transgender male adolescents but may lead to side effects like acne, higher BMI and blood pressure, lower good cholesterol, and decreased bone density.
5 citations
,
January 1970 in “Journal of Nepal Paediatric Society” Hair loss can be a key sign of a rare type of rickets when vitamin D treatment doesn't work and advanced tests aren't available.
October 2025 in “Zenodo (CERN European Organization for Nuclear Research)” Young women with hair loss should get hormone, thyroid, iron, and vitamin D tests, plus clinical checks.
October 2025 in “Zenodo (CERN European Organization for Nuclear Research)” Young women with hair loss should get hormone, thyroid, iron, and vitamin D tests, plus clinical checks.
10 citations
,
January 2017 in “Skin appendage disorders” Emotional stress can trigger intermittent hair loss in chronic telogen effluvium, which may not improve with treatment if stress continues.
June 2024 in “Al- Anbar Medical Journal” Acute telogen effluvium can be resolved by addressing causes, but chronic telogen effluvium is harder to treat.
July 2018 in “Elsevier eBooks” Telogen Effluvium is a common, usually reversible hair loss condition, often improved by removing the trigger and possibly treated with various products, though their effectiveness is uncertain.
July 2023 in “Health science reports” Alopecia Areata is linked to a higher risk of several diseases, which vary with age and sex.
48 citations
,
February 2008 in “Nutrition in Clinical Practice” Dietary changes, including weight loss and a balanced diet, are important for managing PCOS, especially in overweight women.
18 citations
,
January 2015 in “Journal of obesity and weight loss therapy” Eating less starch and dairy helped overweight women with PCOS lose weight and improve symptoms.
6 citations
,
May 2008 in “Current Opinion in Oncology” 2007 research improved understanding of prostate cancer risk, diagnosis, and treatment, but also showed the need for personalized treatment and further study on certain therapies' risks.
4 citations
,
December 2021 in “Pharmacological Reports” Metformin is less effective in men with early-onset hair loss.
September 2023 in “International journal of science and healthcare research” Genetic testing is crucial for diagnosing congenital atrichia, a rare condition causing irreversible hair loss.
146 citations
,
January 2004 in “Hormones” Human skin acts like a hormone-producing organ, making and managing various hormones important for skin and hair health.
75 citations
,
September 2009 in “Dermato-endocrinology” The skin produces and processes hormones, affecting both local and overall body functions.
51 citations
,
January 2003 in “Hormone Research in Paediatrics” Hormones and their receptors, especially androgens, play a key role in hair growth and disorders like baldness.