Millions of Americans take multivitamins and other supplements, but convincing scientific evidence of any true health benefit is lacking, experts say. Now a new study explores why people continue to consume nutritional supplements.
"Most people were using supplements because they believe it will improve their health, but we really don't know whether that's true," said study lead author Regan Bailey, a nutritional epidemiologist in the Office of Dietary Supplements at the U.S. National Institutes of Health.
"Moreover, the vast majority of supplements used in the U.S. are based on personal choice, not because they are recommended by health care professionals," she added.
Nearly half of U.S. adults use dietary supplements, Bailey noted, and supplements are a $30-billion-a-year business.
"People have very strong beliefs about these products and I don't know where they are getting their information," Bailey said. "It's not from the doctors. The majority of scientific data available do not support the role of dietary supplements for improving health or preventing of disease."
Another expert said supplements can be expensive.
"A multivitamin might cost $20 a month. Why not spend that on more fresh produce?" said Marian Neuhouser, of the cancer prevention program at the Fred Hutchinson Cancer Research Center, in Seattle. "If someone is eating a healthy diet with plenty of fruits and vegetables and whole grains -- a wide variety of foods -- they should be getting all the nutrition they need."
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SOURCE: HealthDay News