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GlossaryThyroid Hormone

regulates metabolism and energy production in the body

Thyroid hormone refers to the hormones produced by the thyroid gland, primarily thyroxine (T4) and triiodothyronine (T3). These hormones play a crucial role in regulating metabolism, energy production, and overall growth and development. Imbalances in thyroid hormone levels can lead to conditions such as hypothyroidism or hyperthyroidism, which can affect various bodily functions, including hair growth and health.

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Thyroid Hormones Directly Alter Human Hair Follicle Functions: Anagen Prolongation and Stimulation of Both Hair Matrix Keratinocyte Proliferation and Hair Pigmentation

research Thyroid Hormones Directly Alter Human Hair Follicle Functions: Anagen Prolongation and Stimulation of Both Hair Matrix Keratinocyte Proliferation and Hair Pigmentation

115 citations , August 2008 in “The Journal of Clinical Endocrinology & Metabolism”

Thyroid hormones help hair grow, reduce hair loss, and increase hair pigment.

research Hypothalamic–Pituitary–Thyroid Axis Hormones Stimulate Mitochondrial Function and Biogenesis in Human Hair Follicles

95 citations , August 2013 in “Journal of Investigative Dermatology”

HPT axis hormones boost mitochondrial function and growth in hair follicles, potentially aiding hair health.

research Endocrine Controls of Primary Adult Human Stem Cell Biology: Thyroid Hormones Stimulate Keratin 15 Expression, Apoptosis, and Differentiation in Human Hair Follicle Epithelial Stem Cells In Situ and In Vitro

42 citations , July 2010 in “European Journal of Cell Biology”

Thyroid hormones affect hair follicle stem cells by promoting differentiation and reducing growth.

Cloning of the Human Phenol Sulfotransferase Gene Family: Three Genes Implicated in the Metabolism of Catecholamines, Thyroid Hormones, and Drugs

research Cloning of the Human Phenol Sulfotransferase Gene Family: Three Genes Implicated in the Metabolism of Catecholamines, Thyroid Hormones, and Drugs

26 citations , February 1998 in “Chemico-Biological Interactions”

Scientists identified three genes important for processing certain brain chemicals, thyroid hormones, and medications.

Thyroid Hormones and Androgens Differentially Regulate Gene Expression in Testes and Ovaries of Sexually Mature Silurana Tropicalis

research Thyroid Hormones and Androgens Differentially Regulate Gene Expression in Testes and Ovaries of Sexually Mature Silurana Tropicalis

13 citations , July 2018 in “General and comparative endocrinology”

Thyroid hormones and androgens affect gene expression in frog reproductive organs differently between males and females.

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community Update of my case, might have finally found what happened

in Minoxidil 6 upvotes 1 year ago

OP believes RU58841 affected their thyroid, causing hypothyroidism and impacting minoxidil's effectiveness. They plan to start thyroid medication to improve hair regrowth.

community Are these safe levels to start taking Finasteride (M, 25)?

in Finasteride/Dutasteride 11 upvotes 2 years ago

The conversation discusses concerns about starting finasteride with low testosterone levels, with one person suggesting finasteride might increase testosterone and decrease DHT, and another advising to pay attention to thyroid-stimulating hormone (TSH) levels.

community C’est terrible - at my wits end

in Female 450 upvotes 1 year ago

A 29-year-old woman is experiencing gradual hair thinning since age 15, suspects Androgenic Alopecia, and has tried 5% minoxidil with little success. She has purchased various hair loss treatments including minoxidil, dutasteride, finasteride, and spironolactone, but is cautious about starting them due to potential interactions with her ADHD medication.

community Besides Vitamin D, what other blood tests would you recommend getting if insurance will cover it?

in Treatment 4 upvotes 1 year ago

The conversation is about which blood tests to get for hair loss treatment, besides Vitamin D. No specific treatments were mentioned.

community Reminder : Biotin is useless (expect if you are really deficient, and you're not)

in Chat 102 upvotes 3 years ago

Biotin supplements are not effective for hair loss unless you are actually deficient, which is rare. Some users report improved hair quality with biotin, but there's no evidence supporting its use for hair loss in healthy individuals.

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