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        VOA慢速聽力(019)

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        The blood pressure of the other group was reduced by almost three percent. The researchers were not sure why vitamin C had this effect on blood pressure. They said more studies are needed to find out.
            Other new studies report about Vitamin E. Earlier research suggested this vitamin could reduce the chance of heart attacks. A new study found no evidence of this. Salim Yusuf of Hamilton General Hospital in Ontario, Canada led the study. It was published in the New England Journal of Medicine.
            Researchers studied the health of more than nine thousand five hundred people who had an increased risk of heart attack or stroke. Half of the people took four hundred international units of vitamin E every day. The others took an inactive substance.