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Supplement your
knowledge about
vitamins
by
Stephanie
Ditmer
Dietetic
Intern
Creatine, chondroitin, calcium, Omega-3, magnesium, zinc;
vitamins A,
B-complex, C, D, E, K…. The list of available dietary
supplements is
endless. And while the average consumer may be quick to
buy vitamins,
herbs and other such products, few have important
information about
supplements; what they could do and cannot do for the
person taking
them. What are the regulations behind these various pills,
and how do
dietetic professionals feel about their popular use?
Dietary supplements are defined by the Dietary Supplement
Health and
Education Act of 1994 as products (other than tobacco)
intended to
supplement the diet. Many of these are products are
labeled with
disclaimers, such as, “This statement has not been
evaluated by the
Food and Drug Administration (FDA),” or “This product is
not intended
to treat, cure, or prevent any disease.”
The way dietary supplements are regulated is very
different from the
way that food from a grocery store is regulated. In fact,
the
government’s regulations on the manufacturing and
marketing of dietary
supplements are less strict than they are for foods and
prescription
supplements, such as ferrous sulfate (iron) and potassium.
For
over-the-counter dietary supplements, the FDA requires
neither
registration nor approval before production unless the
supplement
contains a “new dietary ingredient,” or one marketed after
1994. It is
solely the manufacturer’s responsibility to provide
truthful product
information on their labels that is not misleading. The
FDA’s role is
to take action against any unsafe supplement on the
market.
Unfortunately, as in the cases involving ephedra and
tryptophan, the
agency’s intervention usually is triggered by fatal events
related to
some products’ consumption.
If lax regulations and policies on supplement safety and
legitimacy
don’t discourage continued use, consider a little more
research about
some of the most common supplements. In terms of
water-soluble vitamins
(B-vitamins and vitamin C), the body uses what nutrients
it needs and
excretes any unnecessary extras in the urine. Therefore,
when taking
vitamin C supplements to boost immunity to colds for
example, the
extra supplementation consumed normally translates into
money down the
toilet, literally.
Trying to bulk up those muscles via creatine? Studies have
found that
creatine monohydrate supplementation (CMS) in a typical
“load” phase
dose did not significantly improve strength volume nor
increase
pre-post “maximal bench press output” when compared to a
placebo group.
In fact, extra protein is either incorporated into new
proteins or
converted into energy or fat, which is the opposite of the
goal for
desirable muscles.
Chondroitin, a dietary supplement to treat osteoarthritis,
has had
mixed reviews. However, in 2000 a University of Maryland
research team
found that 26 of the 32 chondroitin products they tested
contained less
than 90 percent of the chondroitin sulfate stated on the
label with
only five of the 32 containing the actual stated amount.
This also
could be a waste of money.
The American Dietetic Association’s view on supplements is
clear. They
have stated that “dietary supplementation should be
complementary to
diet (i.e., efforts to improve diet to meet nutrient needs
should be
made prior to, or in conjunction with, dietary
supplementation).” It is
strongly encouraged that nutrients be obtained from the
diet provided
by the United States Department of Agriculture’s Food
Guide Pyramid
(USDA). The American Medical Association also recommends a
daily
multivitamin.
Nutrient needs should be based on the Dietary Reference
Intakes (DRIs)
provided by the USDA. If there is a concern about meeting
the
recommended intake of a nutrient, you should contact a
medical
professional before purchasing dietary supplements. This
action could
save you from wasting your time and money. More
importantly, it could
save you from compromising your health.
For more information about other nutritional supplements,
visit http://www.homeownersinsurance.org/additional-resources/food-and-drug-safety-handbook/
Wednesday, Sept. 12, 2012
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