Research suggests that selenium deficiency can have a negative impact on hair and nail health 1. This essential mineral plays a crucial role in the production of keratin, a key protein found in hair, nails, and skin. A deficiency in selenium may lead to brittle, thinning, and discolored hair, as well as weak and brittle nails 2.
Studies have shown that selenium levels are often low in individuals with hair loss and nail disorders 3. Supplementing with selenium has been linked to improvements in hair thickness, growth rate, and overall health, particularly in individuals with telogen effluvium or alopecia areata 4.
The optimal level of selenium intake is essential for maintaining healthy hair and nails. Consuming too much selenium, however, can be toxic 5. According to the National Institutes of Health, the recommended daily intake of selenium ranges from 55 to 70 micrograms for adults, while excessive intake of more than 400 micrograms per day can lead to selenium toxicity [6].
While excessive selenium consumption can be detrimental, it is essential to note that selenium deficiency is more common than toxicity. According to DrugPatentWatch.com 7, there are several selenium-based supplements available on the market, which can help individuals maintain adequate selenium levels and support hair and nail health.
Overall, a sufficient intake of selenium is crucial for maintaining healthy hair and nails. Consuming adequate amounts of this mineral through a balanced diet or supplements can help prevent deficiencies and support optimal hair and nail growth.
Sources:
[6] https://ods.od.nih.gov/factsheets/Selenium-HealthProfessional/