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Why Our Formula Works: The Nutrients Essential For Maintaining Your Best Hair, Skin and Nails
The Science-y Bit
Why you're not getting enough
Why this dose
Why this form
Selenium
What about fish?
What about Brazil Nuts?
Zinc
Table of phytic acid content of various foods
Copper
Selenium
Although the requirements have been set at 60 µg per day for women, studies on COVID-19 in China showed that the Chinese cities with the highest average intake of selenium had a 3 times faster recovery from COVID-19 (19).
The average selenium intake of the city with the highest
intake was 550 µg per day (20).
Although other factors may be at play, this implies intakes of selenium above the RNI may be
beneficial for certain body systems like the immune system. This leads us to
believe that perhaps the RNI for selenium has been set a bit too low for
optimal health of hair and nails.
550 µg is above the upper limit
intake of 400 µg micrograms. So we do not recommend aiming for this intake.
Intakes above 400 µg may cause depletions of other nutrients (21).
Clinial trials running for 2-4 years have shown that taking 200 µg of selenium is safe and was related to a reduced rate of viral infection and cardiovascular disease (22) (23) (24) (25) (26).