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learn Selenium

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.
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.
Is Selenium more effective when taken orally or applied topically in shampoos or serums? The two are not interchangeable and the evidence points the other way from the common assumption: topical selenium disulfide shampoo has clinical trial support for dandruff and seborrheic dermatitis, while oral selenium supplements have no reliable evidence for hair growth in people who are not deficient, and excess intake is a recognised cause of hair loss.

Research

5 / 1000+ results

research Effect of Growth Phase on Deposition of Selenium (Se) in Tissues of Rats Fed Elevated Dietary Levels of Se as Either L-Selenomethionine or Sodium Selenate

4 citations , January 1989

This study found that growth affects selenium deposition in hair, nails, and other tissues of adult and weanling rats, indicating dietary and physiological factors may influence selenium levels.

research Dietary Selenium Deprivation Oppositely Impacts Longevity and Healthspan in Telomere Dysfunctional Mice

April 2017 in “The FASEB journal”

This study suggests that selenium deprivation in mice accelerates age-related degeneration but paradoxically promotes longevity, potentially decoupling healthspan from lifespan.

research Dietary Intake of Selenium in Relation to Pubertal Development in Mexican Children

5 citations , July 2019 in “Nutrients”

This study found that boys in Mexico City with selenium intake below the recommended dietary allowance had lower odds of progressing to advanced stages of pubertal development, while no association was observed in girls.

research Dietary Aspects for Selenium and/or Selenium Compounds

1 citations , January 2018 in “Molecular and integrative toxicology”

This review discusses the dual role of selenium in human health, highlighting both the dangers of deficiency and potential toxicity from over-supplementation, without presenting new clinical results.

research Effect of dietary selenium source, level, and pig hair color on various selenium indices.

35 citations , January 2001 in “Journal of Animal Science”

This study found that dietary selenium levels above 5 ppm can lead to selenosis in pigs, with white-haired pigs showing alopecia sooner than dark-haired pigs.

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Community Join

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community 22M Losing hair since 16, nothing helps, scalp always itchy. Just fed up.

in Treatment 59 upvotes 11 months ago

A 22-year-old experiencing hair loss and persistent scalp itchiness since age 16 has tried various treatments, including finasteride, ketoconazole shampoo, and dietary changes, with no success. Suggestions include consulting a knowledgeable dermatologist, considering seborrheic dermatitis, and trying different shampoos like Selsun Blue or those with selenium sulfide.

community Proposed new pathogenesis model for androgenetic alopecia (AGA)

7 upvotes 3 years ago

The conversation discusses a new model for understanding androgenetic alopecia (AGA), linking it to dietary and lifestyle factors similar to PCOS, and highlighting the role of DHT, vascular damage, and inflammation. Treatments mentioned include Minoxidil, finasteride, and RU58841.

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 My estrogen levels are obscene

6 upvotes 1 year ago

A 30-year-old male using finasteride for hair loss has high testosterone and estrogen levels but no side effects. He is advised to monitor hormone levels, consider dietary changes, and use additional treatments like vitamin D3, minoxidil, and dutasteride for hair growth.

community DHT Itch and Oily Scalp Explained (and how to fix it)

90 upvotes 3 months ago

Malassezia overgrowth can worsen oily scalp and inflammation, contributing to hair loss. Treatments include antifungal shampoos, C6/C8 MCT oil, low-dose isotretinoin, finasteride, and dutasteride.

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