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Substances
such as herbal remedies and vitamins are sometimes marketed
as "dietary supplements", which is a legal classification
for a particular kind of foodstuff. Since the Dietary Supplement
Health and Education Act of 1994, supplement manufacturers
can make general claims about the health-promoting properties
of their products without the kind of rigorous standards that
would be required to establish safety and effectiveness if
the same product were marketed as a drug or a food additive.
This means that dietary supplements vary widely in safety
and in effectiveness; in some cases, there is little or no
scientific evidence to support manufacturers' claims.
Further Reading:
The Mayo Health Clinic (http://www.mayohealth.org)
maintains a current list of information about dietary suppelements.
Article : "GINKGO"
by Catherine E. Myers. Copyright © 2006 Memory Loss and the Brain |
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