Contemporary Nutrition 9th Edition by Gordon Wardlaw,Anne Smith

تمرين 20

A Closer Look at Supplement Use
With the current popularity of vitamin and mineral supplements, it is more important than ever to understand how to evaluate a supplement. Study the label of a supplement you use or one readily available from a friend or the supermarket. Then answer the following questions.
1. What is the recommended dosage of this supplement?
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3. Are any suggested intakes above the Upper Level for the nutrient?
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4. Are there any superfluous ingredients, such as herbs or flavors, in the supplement? You can often determine these by looking for ingredients that do not have a percent of Daily Value.
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5. Does at least 50% of the vitamin A in the product come from beta-carotene or other provitamin A carotenoids (to reduce risk of preformed vitamin A toxicity)?
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6. Are there any warnings on the label as to populations who should not consume this product?
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7. Are there any other signs that tip you off that this product may not be safe?
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