People as young as 20 have amyloid buildup, but researchers aren't sure what it means

Guidelines issued for U.S. high schools

Millions of consumers could lose health insurance subsidies in dispute over language in the law

Ebola Outbreak Slowing, But Fight Against Disease Must Continue: U.N. U.S. Nurse Who Contracted Ebola Sues Employer

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Researchers also report drop in number of multiple embryo transfers, twin and triplet birth rates

Two of four classes of the AIDS-causing virus arose in these large primates, international study finds

Three to five cups daily appeared to lower risk of clogged arteries, study says

Analysis of research says it's 'not a benign drug' if used long term and in larger doses