51 citations
,
May 1996 in “American journal of physiology. Regulatory, integrative and comparative physiology/American journal of physiology. Regulatory, integrative, and comparative physiology” Gray seals use more energy and have higher hormone levels during their annual fur-shedding period.
42 citations
,
July 2010 in “European Journal of Cell Biology” Thyroid hormones affect hair follicle stem cells by promoting differentiation and reducing growth.
37 citations
,
January 1975 in “Journal of Experimental Zoology” Epilation doesn't affect rat hair growth; thyroxine speeds it up, while estradiol slows it down.
35 citations
,
August 1978 in “Australian Veterinary Journal” Feeding steers only Leucaena leucocephala causes severe health issues and poor weight gain.
32 citations
,
March 2021 in “Journal of endocrinological investigation” Thyroid hormones are important for skin health and changes in them can affect conditions like hair loss and eczema.
30 citations
,
October 2012 in “Current Opinion in Endocrinology, Diabetes and Obesity” Thyroid hormones are important for skin health and might help treat skin diseases, but more research is needed to understand their effects fully.
29 citations
,
February 1987 in “General and comparative endocrinology” Thyroid and gonadal hormones control seasonal hair growth and molting in male European badgers.
28 citations
,
March 1942 in “Journal of Endocrinology” Male rats grow hair faster than females, and certain hormones can slow or slightly increase hair growth, but not significantly beyond natural rates.
26 citations
,
July 1995 in “Small ruminant research” Melatonin implants affect the growth and pattern of cashmere goat fleece depending on the time of year they are given.
25 citations
,
January 2022 in “Endocrine journal” Long COVID patients may have hormonal imbalances linked to their symptoms.
20 citations
,
January 1979 in “Journal of Experimental Zoology” Plucking hair speeds up the next hair growth, but hormones can change this timing.
14 citations
,
February 2007 in “Irish Veterinary Journal” A dog with a pituitary tumor developed tertiary hypothyroidism, improved with treatment, but was later euthanized due to neurological issues.
11 citations
,
January 2020 in “World Journal of Traditional Chinese Medicine” Kidney-yang deficiency syndrome causes hormonal imbalances and various physical symptoms.
11 citations
,
January 1973 in “BMJ” Primary hypothyroidism can mimic pituitary failure but improves with hormone therapy.
9 citations
,
January 2007 in “Gynecological Endocrinology” A woman was the first known case to have both polycystic ovary syndrome and autoimmune polyglandular syndrome type 2, suggesting a need to check for both conditions in similar patients.
6 citations
,
January 2015 in “Indian Dermatology Online Journal” Too much levothyroxine can cause hair loss in infants.
6 citations
,
November 2010 in “Histochemistry and cell biology” The proteins transthyretin and megalin are more present in the growth phase of hair, suggesting they might affect hair health and growth.
3 citations
,
November 2020 in “Cleveland Clinic Journal of Medicine” Eyelash loss can be a sign of thyroid problems.
3 citations
,
October 2003 in “Annals of Oncology” A woman with low thyroid function did not lose her hair during chemotherapy, possibly because her hair follicles were less affected by the treatment.
2 citations
,
May 2017 in “Maturitas” Women with premature ovarian insufficiency have a worse cardiovascular risk profile than premenopausal women.
2 citations
,
June 2014 in “مجلة مركز بحوث التقنيات الاحيائية” Five different TPO gene mutations were found in PCOS patients with thyroid hormone issues.
2 citations
,
January 2023 in “International journal of biological sciences” Gray hair can potentially be reversed, leading to new treatments.
2 citations
,
June 2005 in “Clinical Oncology” A man's bald spot grew hair after starting cancer treatment with gefitinib.
1 citations
,
February 2025 in “Experimental Physiology” Marie Krogh advanced understanding of thyroid hormones' effects on metabolism.
June 2025 in “Journal of Biochemistry International” Early diagnosis and treatment of iodine deficiency in buffalo calves is crucial for their healthy growth.
March 2025 in “Frontiers in Veterinary Science” Changing light exposure boosts hormone levels and antioxidant activity, improving cashmere growth in goats.
March 2025 in “European Journal of Medical Genetics” Tofacitinib helped improve symptoms and hair growth in a patient with Aicardi-Goutières syndrome.
July 2024 in “Journal of Investigative Dermatology” Topical thyroid hormones may boost hair growth.
June 2024 in “Biological and Clinical Sciences Research Journal” Thyroid dysfunction worsens symptoms in women with PCOS, so regular thyroid checks are important.
Applying thyroid hormones to the scalp can help hair grow.