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Precautions for Taking Dietary Supplements
Subjects > Health > Fraudulent Health Claims - Don't Be Fooled
Precautions for Taking Dietary Supplements
There are thousands of dietary supplements on the market. Many contain vitamins and minerals to supplement the amounts of these nutrients that people get from the food they eat. There also are many products on the market that contain substances such as high-potency free amino acids, botanicals, enzymes, herbs, animal extracts, and bioflavanoids.
Some dietary supplements have documented benefits; the advantages of others are unproven and claims about those products may be false or misleading. For example, claims that you can eat all you want and lose weight effortlessly are not true. To lose weight, you must lower your calorie intake or increase your calorie use through exercise. Most experts recommend doing both. Similarly, no body building product can "tone you up" effortlessly or build muscle mass without exercise. Claims to the contrary are false. Other questionable claims may involve products advertised as effective in curing insomnia, reversing hair loss, relieving stress, curing impotency, improving memory or eyesight, and slowing the aging process.
In addition to lacking documented effectiveness, some dietary supplements may be harmful under some conditions of use. Reports of adverse reactions to dietary supplements are monitored by the U.S. Food and Drug Administration to identify emerging safety issues.
According to the FDA, the following substances in dietary supplements are among those that raise serious safety issues at certain concentrations: chaparral, comfrey, yohimbe, lobelia, germander, willow bark, guar gum, jin bu huan, ma huang, L-tryptophan, phenylalanine, and germanium. In addition, some vitamins and minerals can cause problems for some people when taken in excessive doses. These include vitamin A, niacin, vitamin B6, vitamin D, iron, and folic acid. And remember, a label of "natural" is no guarantee of a product's safety or effectiveness.
Consumers who use dietary supplements should always read product labels to determine the % daily value for various nutrients contained in the product. Also, it's a good idea to seek advice from a health professional before taking dietary supplements, particularly for children, adolescents, older or chronically ill persons, and women who are pregnant or breast-feeding.
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Precautions For Taking Dietary Supplements
