By definition, complementary and alternative medicine consists of therapies that are unproven, at least by the standards of Western medicine.

根据定义，补充和替代疗法包括那些未经验证的，至少是不为西方医学标准所验证的方法。

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Some forms of complementary and alternative medicine can cause harmful side effects.

某些补充和替代疗法可能会导致有害的副作用。

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Supporters of complementary and alternative medicine propose a number of reasons why their therapies have not been subjected to thorough testing.

补充和替代疗法的支持者举出了几个这些疗法未能接受彻底验证的原因。

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The study, which appears in the Annals of Internal Medicine, was funded by the National Center for Complementary and Alternative Medicine (part of the National Institutes of Health) and the Robert Wood Johnson Foundation.

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In fact, 75 percent of cancer patients who used complementary and alternative medicine didn't tell their physicians, according to a 2005 survey.

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The herb can cause headaches or tiredness the morning after, according to the National Institutes of Health's National Center for Complementary and Alternative Medicine.

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