Dietary supplements can contain a wide variety of ingredients,
either singly or in combination, including nutrients, botanicals
and 'bioactive components' commonly found in foods. They are
marketed and used by consumers for a range of reasons: to enhance
"well-being," as traditional medicines, for health promotion or
disease risk reduction, and as alternatives or complements to
conventional drug therapies.
On a global basis, the dietary supplement industry has enjoyed
rapid growth, becoming a multi-billion dollar enterprise over the
last 10 years. This growth has been associated with significant
changes in both the types of products available and the reasons for
using these products.
In many cases, these changes have occurred without the benefit
of a sound scientific basis for evaluating the safety and efficacy
of these products under the new conditions of use and frequently
the same limited scientific evidence is used, even though current
product composition, user populations, purported beneficial
effects, and conditions of use may differ significantly from the
available evidence or historical usage.
This book presents systematic examinations of the scientific
data that are available and/or needed to substantiate and evaluate
the safety and efficacy of dietary supplements. A series of case
studies that are illustrative of the types of scientific challenges
that have been encountered in substantiating safety and efficacy
for various product types are employed to point out some of the
successes but also frustrations that have occurred in recent years.
Discussions among presenters and participants identify the lessons
learned from these experiences and formulate ideas forimproved
approaches to identifying research needs and for enhancing the
quality and relevance of the scientific evidence available for
policy decisions.
"Dietary Supplements and Health" constitutes a useful resource
for nutritionists, biochemists, public health researchers and
anyone interested in herbal, alternative medicines.
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