Many diabetics have low blood levels of zinc, and those with
damage to the retina have even lower levels. A study in the European Journal of
Clinical Nutrition found that zinc may guard against oxidation damage to the
retina.
Subjects took 30 mg's of zinc per day for three months, and
their blood levels of zinc went up, and the markers showing oxidation went
down.
In the general population, people don't get enough zinc. You
should take around 15 mgs per day.
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