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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The more ancient forms of complementary and alternative medicine are also known as traditional medicine.

补充和替代疗法更古老形式叫做传统医学。

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However, complementary and alternative therapists-perhaps because they are usually private-take much longer.

但是，补充医学和替代医学的治疗师——可能因为他们通常是私营的——就会花更长时间治病。

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Studying complementary and alternative health practices is a critical step in advancing all healthcare.

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"Slowly, but surely, complementary and alternative therapies are being recognised as a having health and well-being value, " he said.

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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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