According to the authors, which vitamin still warrants further investigation to clarify the appropriate use of supplementation?
A. β-carotene
B. Vitamin B12
C. Vitamin C
D. Vitamin D
E. Vitamin E
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Despite the questions surrounding the benefits of taking supplements, the vitamin industry in the United States reported what level of sales in 2010?
A. $ 10 million
B. $ 28 million
C. $ 5 billion
D. $ 28 billion
E. $ 40 billion
Select the statement below that best summarizes the overall opinion of the authors with respect to the role of vitamin and mineral supplements in the prevention of chronic disease?
A. So far the evidence has shown vitamin and mineral supplements are harmful or ineffective for chronic disease prevention. However, they should not be avoided until further large prevention trials are conducted.
B. More research is recommended but until new trials are completed the use of vitamin and mineral supplements has clear benefits and is justified for the general population.
C. The use of vitamin and mineral supplement has no clear benefit and in some cases possible harm. It is not justified for the general population, who show no clear evidence of micronutrient deficiencies, to take these types of supplements.
c) Lamas and associates (paragraph 3)TACT (Trial to Assess Chelation Therapy): Oral High-Dose Multivitamins and Minerals after Myocardial Infarction
A. Case control study
B. Cohort study
C. Interventional study
D. Meta-analysis
b) Grodstein and coworkers (paragraph 2)Long-Term Multivitamin Supplementation and Cognitive Function in Men
A. Case control study
B. Cohort study
C. Interventional study
D. Meta-analysis
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