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  1. Health & Medicine

    Jet lag makes hamsters dumb

    A new study highlights the perils of shifting time zones.

    By Laura Sanders
  2. Health & Medicine

    Flick of a whisker can prevent stroke damage in rats

    A new study in animals suggests sensory stimulation could potentially provide a nondrug method for protecting human patients.

    By Laura Sanders
  3. Health & Medicine

    Fish oil fails to hold off heart arrhythmia

    Atrial fibrillation patients who took capsules rich in omega-3 fatty acids had about as many episodes as those getting a placebo, a study finds.

    By Nathan Seppa
  4. Health & Medicine

    Pain-free pianists use their backs

    Pianists who use smaller arm and finger muscles are more prone to injury than players who activate their back and neck muscles.