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Glossary Selenium

trace mineral essential for metabolism and thyroid function

Selenium is a trace mineral essential for human health, playing a crucial role in metabolism and thyroid function. It acts as an antioxidant, helping to protect cells from damage, and is important for maintaining healthy hair and preventing conditions like alopecia.

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What is Selenium and why is it important for healthy hair and scalp function? Selenium is essential for hair health due to its antioxidant properties and role in thyroid function.
Can Selenium supplements help prevent or reverse hair loss caused by nutritional deficiencies? Selenium supplements may not effectively prevent or reverse hair loss from nutritional deficiencies.
What are the risks of taking too much Selenium, and how can you get the right amount safely? Excess selenium can cause toxicity; aim for recommended dietary amounts through food sources.
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Research

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research Incorporation of Selenium-75 into Dog Hair

13 citations , October 1960 in “Experimental Biology and Medicine”

This study found that small amounts of subcutaneously injected Se75 were deposited and retained in the hair of dogs for up to 316 days.

research 75176 A selenium disulfide-based shampoo rebalances the scalp microbiome of subjects of any hair type

July 2026 in “Journal of the American Academy of Dermatology”

Evaluation of the Composition of Nutricosmetics Used in Hair Treatment

research AVALIAÇÃO DA COMPOSIÇÃO DE NUTRICOSMÉTICOS UTILIZADOS NO TRATAMENTO DE CABELO

October 2021 in “Interfaces Científicas”

This study analyzed the nutritional composition of 75 nutricosmetic products, finding common ingredients like biotin and zinc, but emphasized the need for further research on their effectiveness for hair and nail health.

research Acute Selenium Toxicity Associated With a Dietary Supplement

382 citations , February 2010 in “Archives of Internal Medicine”

This study identified that high concentrations of selenium in a liquid dietary supplement caused a widespread outbreak of poisoning, revealing the importance of stricter manufacturing standards.

research Roles of Nutritional Selenium in Mouse Aging and Age‐related Degenerations

April 2015 in “The FASEB Journal”

This study suggests that selenium deficiency accelerates aging-related health deterioration in mice with short telomeres, providing a model for exploring selenium’s role in human aging.

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community "Switched to Dutasteride and 7.5 mg Oral Minoxidil 4 Months Ago – Still Shedding?"

in Is this regrowth? 8 upvotes 1 year ago

A 24-year-old switched from finasteride to dutasteride and increased oral minoxidil from 5 mg to 7.5 mg, noticing increased hair shedding. Users discuss the safety and effects of high-dose minoxidil, with some suggesting the shedding may be temporary due to dosage changes.

community 31 year old, wedding coming up in 9 weeks, worried about how fast hair loss happening. On 1mg finasteride and 3.75mg minoxidil

1 upvotes 4 weeks ago

A 31-year-old is concerned about rapid hair loss before their wedding in 9 weeks, currently using 1mg finasteride and 3.75mg minoxidil daily. Suggestions include accepting the current situation, using hair powders for density, and considering dutasteride after the wedding.

community Are carbohydrates needed for hair growth

26 upvotes 2 years ago

A 47-year-old male experienced significant hair loss after losing 37 kg in 6 months on a low-carb diet and started taking biotin, zinc, iron, selenium, and spectral dcn-n. Replies suggest that while carbs are not directly needed for hair growth, they help regulate hormones and nutrient absorption, and rapid weight loss can also contribute to hair loss.

community So I tried the natural approach and..

in Chat 2 upvotes 1 year ago

Natural DHT blockers caused negative side effects like weak erections and depression, while finasteride improved overall well-being and cleared acne. Users shared similar experiences, finding finasteride effective without the adverse effects of natural treatments.

community Bryan (the guy who reversed aging) shares treatment that reversed his hair loss

1096 upvotes 1 year ago

A person improved hair loss from Norwood 3 to Norwood 2 using a topical formula with minoxidil, dutasteride, and tretinoin, plus oral minoxidil and red light therapy. There is skepticism about the treatment's effectiveness and concerns about misleading comparison photos.

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