October 2022 in “The Egyptian Journal of Hospital Medicine” Diffuse hair loss in women is often linked to thyroid problems.
July 2024 in “Journal of Investigative Dermatology” Human hair follicles have their own thyroid hormone system.
November 2023 in “International Journal of Trichology” No significant link between hair loss and iron or thyroid levels was found, but checking for deficiencies might still be useful.
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.
January 2024 in “Medicine” Hypothyroidism is often linked to the hair loss condition telogen effluvium.
29 citations
,
April 2003 in “Experimental dermatology” Human hair follicles grown in vitro maintain normal keratin patterns and structure.
1 citations
,
June 2023 in “Nutrients” Vitamin D deficiency is linked to a higher chance of metabolic syndrome in women with PCOS.
37 citations
,
October 2006 in “Archives of Biochemistry and Biophysics” A unique gene mutation causes vitamin D-resistant rickets without causing hair loss.
September 2023 in “International Journal of Trichology” Oral Vitamin D can improve hair density and reduce hair loss in Telogen Effluvium patients.
3 citations
,
August 2024 in “Frontiers in Endocrinology” Thyroid issues can cause alopecia areata.
The conclusion is that endocrinology significantly impacts medicine with various common medications used for treatment.
7 citations
,
January 2003 in “Elsevier eBooks” Testosterone is crucial for development, growth, and various body functions in mammals.
January 2025 in “Indian Journal of Paediatric Dermatology” Vitamin D deficiency is common in children with and without alopecia areata, and more research is needed.
22 citations
,
September 2000 in “Journal of Investigative Dermatology” μ-Crystallin may help hair growth by affecting thyroid hormone levels in mouse hair follicles.
16 citations
,
August 2021 in “Tumor Biology” TMPRSS2 helps viruses enter cells and protects the prostate from inflammation-related cancer.
November 2025 in “Scientific Reports” COVID-19 may cause hair loss by affecting hair follicles.
April 2024 in “bioRxiv (Cold Spring Harbor Laboratory)” Removing Sprouty genes in mice causes various hormone-related issues but does not increase cancer risk by one year of age.
50 citations
,
March 2011 in “European Journal of Endocrinology” Spironolactone improved blood vessel function and cholesterol levels in non-obese women with PCOS.
10 citations
,
January 2023 in “SAGE Open Medical Case Reports” COVID-19 infection and vaccination may trigger hair loss and rapid hair whitening.
8 citations
,
June 2022 in “Cancers” Epirubicin and cyclophosphamide cause more anemia and side effects than docetaxel and cyclophosphamide, but both are equally effective.
7 citations
,
January 2019 in “Journal of clinical medicine research” Menopause causes significant changes in the vaginal introitus, but less so in the labia majora, which may lead to symptoms of vaginal atrophy.
6 citations
,
March 2020 in “Anais Brasileiros de Dermatologia” CTLA4 gene variants are not linked to alopecia areata in Monterrey's Mexican population.
4 citations
,
November 2024 in “Cell Biology and Toxicology” Blocking certain receptors in the lungs might help treat a specific type of asthma.
3 citations
,
August 2013 in “Maǧallaẗ ǧāmiʻaẗ al-anbār li-l-ʻulūm al-ṣirfaẗ” Thyroid and reproductive hormones, BMI, and excess hair are linked in Iraqi women with PCOS.
1 citations
,
September 2023 in “Acta dermato-venereologica” Certain genetic variants are linked to frontal fibrosing alopecia in Spanish patients.
1 citations
,
April 2025 in “Pigment Cell & Melanoma Research” Managing stress and nerve activity can help treat segmental vitiligo and white hair.
1 citations
,
December 2022 in “Clinical, Cosmetic and Investigational Dermatology” Midscalp hair density and terminal hair percentage are good indicators of female pattern hair loss severity.
1 citations
,
January 2020 in “Инфекционные болезни. Новости, мнения, обучение” Lack of vitamin D might cause hair loss due to autoimmune problems, and fixing vitamin D levels could help treat it.
September 2023 in “Journal of Cosmetic Dermatology” Lower vitamin D levels are linked to higher CRP levels in people with a type of hair loss called alopecia areata.
3 citations
,
August 2022 in “Cutis” Certain nail conditions can suggest thyroid problems, with different symptoms for underactive (slow, thin nails) and overactive (spoon-shaped, brittle nails) thyroid.